Cải thiện bài viết
Lưu bài viết
Với một loạt các số, nhiệm vụ là viết một chương trình Python để tìm các số chia cho 7 và bội số 5.
Example:
Input:Enter minimum 100 Enter maximum 200 Output: 105 is divisible by 7 and 5. 140 is divisible by 7 and 5. 175 is divisible by 7 and 5. Input:Input:Enter minimum 29 Enter maximum 36 Output: 35 is divisible by 7 and 5.
Một tập hợp các số nguyên có thể được kiểm tra tính phân chia cho 7 và 5 bằng cách thực hiện hoạt động modulo của số với 7 và 5 tương ứng, sau đó kiểm tra phần còn lại. Điều này có thể được thực hiện theo những cách sau: & nbsp;
Python3
start_num
=
35 is divisible by 7 and 5.0
35 is divisible by 7 and 5.1__12
35 is divisible by 7 and 5.4
=
35 is divisible by 7 and 5.0
35 is divisible by 7 and 5.1
35 is divisible by 7 and 5.8
35 is divisible by 7 and 5.3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.0____9
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.2
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.4
=
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.6
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.0
10.a + b0
10.a + b1
=
=
10.a + b4
10.a + b5
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.0
10.a + b0
10.a + b8
20.a + 2.b3
20.a + 2.b4
20.a + 2.b5
20.a + 2.b6
35 is divisible by 7 and 5.3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.0____50509
21.a - a + 2.b2
Output:
35 is divisible by 7 and 5.
Điều này cũng có thể được thực hiện bằng cách kiểm tra xem số có chia hết cho 35 hay không, vì LCM là 7 và 5 là 35 và bất kỳ số nào chia hết cho 35 đều chia hết cho 7 và 5 và ngược lại. & NBSP;
Python3
‘
35 is divisible by 7 and 5.4
=
35 is divisible by 7 and 5.0
35 is divisible by 7 and 5.1
-a + 2b3
35 is divisible by 7 and 5.3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.0____9
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.2
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.4
=
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.6
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.0
10.a + b0
10.a + b1
=
=
10.a + b4
10.a + b5
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.0
10.a + b0
10.a + b8
20.a + 2.b3
20.a + 2.b4
20.a + 2.b5
start_num
435 is divisible by 7 and 5.3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.0____50509
21.a - a + 2.b2
Output:
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.
70 is divisible by 7 and 5.
105 is divisible by 7 and 5.
140 is divisible by 7 and 5.
735 is divisible by 7 and 5.
0 21.a - a + 2.b
70 21.a - a + 2.b
7135 is divisible by 7 and 5.
36
70 is divisible by 7 and 5.
105 is divisible by 7 and 5.
140 is divisible by 7 and 5.
770 is divisible by 7 and 5.
105 is divisible by 7 and 5.
140 is divisible by 7 and 5.
8 21.a - a + 2.b
7535 is divisible by 7 and 5.
0 21.a - a + 2.b
777 10.a + b
1 21.a - a + 2.b
79 10.a + b
4 21.a - a + 2.b
81
Is
A simple method is repeated subtraction. Following is another interesting method.
Divisibility by 7 can be checked by a recursive method. A number of the form 10a + b is divisible by 7 if and only if a – 2b is divisible by 7. In other
words, subtract twice the last digit from the number formed by the remaining digits. Continue to do this until a small number.
Example: the number 371: 37 – [2×1] = 37 – 2 = 35; 3 – [2 × 5] = 3 – 10 = -7; thus, since -7 is divisible by 7, 371 is divisible by 7.
Following is the implementation of the above method
C++
=
1
=
2 =
3 =
4
35 is divisible by 7 and 5.0
=
635 is divisible by 7 and 5.0
=
8=
9
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
35 is divisible by 7 and 5.02
20.a + 2.b3
35 is divisible by 7 and 5.04
35 is divisible by 7 and 5.05
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
35 is divisible by 7 and 5.08
20.a + 2.b3
35 is divisible by 7 and 5.04
35 is divisible by 7 and 5.11
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
35 is divisible by 7 and 5.14
20.a + 2.b3
35 is divisible by 7 and 5.04
35 is divisible by 7 and 5.17
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.04
35 is divisible by 7 and 5.20
35 is divisible by 7 and 5.21
35 is divisible by 7 and 5.22
35 is divisible by 7 and 5.23
35 is divisible by 7 and 5.0
35 is divisible by 7 and 5.25
=
9
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.0
35 is divisible by 7 and 5.29
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
35 is divisible by 7 and 5.32
20.a + 2.b3
35 is divisible by 7 and 5.34
35 is divisible by 7 and 5.35
35 is divisible by 7 and 5.36
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.38
20.a + 2.b3
35 is divisible by 7 and 5.34
35 is divisible by 7 and 5.41
35 is divisible by 7 and 5.36
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.04
35 is divisible by 7 and 5.17
35 is divisible by 7 and 5.23
C
35 is divisible by 7 and 5.47
35 is divisible by 7 and 5.0
=
635 is divisible by 7 and 5.0
=
8=
9
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
35 is divisible by 7 and 5.02
20.a + 2.b3
35 is divisible by 7 and 5.04
35 is divisible by 7 and 5.05
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
35 is divisible by 7 and 5.08
20.a + 2.b3
35 is divisible by 7 and 5.04
35 is divisible by 7 and 5.11
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
35 is divisible by 7 and 5.14
20.a + 2.b3
35 is divisible by 7 and 5.04
35 is divisible by 7 and 5.17
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.04
35 is divisible by 7 and 5.20
35 is divisible by 7 and 5.23
35 is divisible by 7 and 5.0
35 is divisible by 7 and 5.25
=
9
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.0
35 is divisible by 7 and 5.29
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
35 is divisible by 7 and 5.32
20.a + 2.b3
35 is divisible by 7 and 5.34
35 is divisible by 7 and 5.35
35 is divisible by 7 and 5.36
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.38
20.a + 2.b3
35 is divisible by 7 and 5.34
35 is divisible by 7 and 5.41
35 is divisible by 7 and 5.36
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.04
35 is divisible by 7 and 5.17
35 is divisible by 7 and 5.23
C
35 is divisible by 7 and 5.0
=
635 is divisible by 7 and 5.0
=
870 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.04
35 is divisible by 7 and 5.73
=
9
20.a + 2.b3
35 is divisible by 7 and 5.85
35 is divisible by 7 and 5.86
35 is divisible by 7 and 5.35
35 is divisible by 7 and 5.88
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
=
920.a + 2.b3
35 is divisible by 7 and 5.85
35 is divisible by 7 and 5.86
35 is divisible by 7 and 5.41
35 is divisible by 7 and 5.88
Java
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.00
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.01
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.02
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.03
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.06
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.07
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.08____10
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.10
20.a + 2.b3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.15
10.a + b4
35 is divisible by 7 and 5.3
35 is divisible by 7 and 5.21
35 is divisible by 7 and 5.04
35 is divisible by 7 and 5.05
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.23
20.a + 2.b3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.23
10.a + b4
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.25
10.a + b1
35 is divisible by 7 and 5.3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
=
935 is divisible by 7 and 5.21
35 is divisible by 7 and 5.04
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.30
35 is divisible by 7 and 5.36
20.a + 2.b3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.68
35 is divisible by 7 and 5.21
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.70
35 is divisible by 7 and 5.35
35 is divisible by 7 and 5.88
20.a + 2.b3
35 is divisible by 7 and 5.38
35 is divisible by 7 and 5.21
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.70
35 is divisible by 7 and 5.41
35 is divisible by 7 and 5.88
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.23
35 is divisible by 7 and 5.23
Python3
20.a + 2.b3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.15
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.35
35 is divisible by 7 and 5.3
35 is divisible by 7 and 5.21
35 is divisible by 7 and 5.04
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.39
35 is divisible by 7 and 5.36
20.a + 2.b3
35 is divisible by 7 and 5.04
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.43
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.35
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.45
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.46
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.55
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.06
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.57
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.58
20.a + 2.b3
35 is divisible by 7 and 5.0
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.63
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.64
35 is divisible by 7 and 5.36
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.82
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.83
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.86
10.a + b4
20.a + 2.b2
20.a + 2.b3
35 is divisible by 7 and 5.04
=
670 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.929____98
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.96
=
=
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
10.a + b39
20.a + 2.b3
35 is divisible by 7 and 5.04
10.a + b08
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.15
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.35
10.a + b05
20.a + 2.b3
35 is divisible by 7 and 5.04
10.a + b16
C#
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.04
10.a + b19
10.a + b20______320
10.a + b01
=
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.64
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
20.a + 2.b4
35 is divisible by 7 and 5.1
35 is divisible by 7 and 5.35
35 is divisible by 7 and 5.3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
=
920.a + 2.b3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
35 is divisible by 7 and 5.02
35 is divisible by 7 and 5.38
20.a + 2.b2
20.a + 2.b3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
35 is divisible by 7 and 5.08
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.02
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.03
20.a + 2.b3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
35 is divisible by 7 and 5.14
20.a + 2.b3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.15
10.a + b4
35 is divisible by 7 and 5.3
35 is divisible by 7 and 5.21
35 is divisible by 7 and 5.04
35 is divisible by 7 and 5.05
10.a + b87
10.a + b88
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.23
20.a + 2.b3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.23
10.a + b4
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.25
10.a + b1
35 is divisible by 7 and 5.3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
=
935 is divisible by 7 and 5.21
35 is divisible by 7 and 5.04
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.30
35 is divisible by 7 and 5.36
20.a + 2.b3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.68
35 is divisible by 7 and 5.21
20.a + 2.b05
35 is divisible by 7 and 5.35
35 is divisible by 7 and 5.88
20.a + 2.b3
35 is divisible by 7 and 5.38
35 is divisible by 7 and 5.21
20.a + 2.b05
35 is divisible by 7 and 5.41
35 is divisible by 7 and 5.88
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.23
20.a + 2.b3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.15
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.35
35 is divisible by 7 and 5.3
35 is divisible by 7 and 5.
2135 is divisible by 7 and 5.
04 70 is divisible by 7 and 5.
105 is divisible by 7 and 5.
140 is divisible by 7 and 5.
3935 is divisible by 7 and 5.
36
20.a + 2.b17
20.a + 2.b3
35 is divisible by 7 and 5.04
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.43
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.35
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.45
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.46
=
9
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.55
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.06
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.57
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.58
20.a + 2.b3
35 is divisible by 7 and 5.0
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.63
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.64
35 is divisible by 7 and 5.36
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.82
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.83
20.a + 2.b3
35 is divisible by 7 and 5.04
35 is divisible by 7 and 5.11
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.86
10.a + b4
20.a + 2.b2
20.a + 2.b3
35 is divisible by 7 and 5.04
35 is divisible by 7 and 5.17
20.a + 2.b3
35 is divisible by 7 and 5.04
=
670 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.929____98
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.96
=
=
35 is divisible by 7 and 5.23
20.a + 2.b3
35 is divisible by 7 and 5.04
10.a + b08
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.15
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.35
10.a + b05
20.a + 2.b3
20.a + 2.b72
35 is divisible by 7 and 5.1
35 is divisible by 7 and 5.35
35 is divisible by 7 and 5.88
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.38
20.a + 2.b3
20.a + 2.b72
35 is divisible by 7 and 5.1
35 is divisible by 7 and 5.41
35 is divisible by 7 and 5.88
20.a + 2.b83
20.a + 2.b
335 is divisible by 7 and 5.
04 10.a + b
16
20.a + 2.b84
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.04
10.a + b19
10.a + b20______320
=
9
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
35 is divisible by 7 and 5.02
20.a + 2.b3
35 is divisible by 7 and 5.04
35 is divisible by 7 and 5.05
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
35 is divisible by 7 and 5.08
20.a + 2.b3
35 is divisible by 7 and 5.04
35 is divisible by 7 and 5.11
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
35 is divisible by 7 and 5.14
20.a + 2.b3
35 is divisible by 7 and 5.04
35 is divisible by 7 and 5.17
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.04
10.a + b86
20.a + 2.b56
21.a - a + 2.b10
35 is divisible by 7 and 5.23
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
21.a - a + 2.b13
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
21.a - a + 2.b16
20.a + 2.b3
21.a - a + 2.b18
35 is divisible by 7 and 5.35
35 is divisible by 7 and 5.88
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.38
20.a + 2.b3
21.a - a + 2.b18
35 is divisible by 7 and 5.41
35 is divisible by 7 and 5.88
21.a - a + 2.b27
Độ phức tạp về thời gian: O [logn]O[logn]
Không gian phụ trợ: O [LOGN]O[logn]
Cái này hoạt động ra sao? Đặt 'B' là chữ số cuối cùng của một số 'n' và đặt 'A' là số chúng ta nhận được khi tách ra 'B'. & NBSP; biểu diễn của số cũng có thể được nhân với bất kỳ số nào tương đối Ưu điểm mà không thay đổi tính chia rẽ của nó. Sau khi quan sát rằng 7 phân chia 21, chúng ta có thể thực hiện như sau: & nbsp; Let ‘b’ be the last digit of a number ‘n’ and let ‘a’ be the number we get when we split off
‘b’.
The representation of the number may also be multiplied by any number relatively prime to the divisor without changing its divisibility. After observing that 7 divides 21, we can perform the following:
10.a + b
Sau khi nhân với 2, điều này trở thành & nbsp; & nbsp;
20.a + 2.b
và sau đó & nbsp; & nbsp;
21.a - a + 2.b
Loại bỏ bội số của 21 cho & nbsp; & nbsp;
-a + 2b
và nhân với -1 cho & nbsp; & nbsp;
a - 2b
Phương pháp: Để kiểm tra số đã cho là chia hết cho 7 hoặc không bằng cách sử dụng toán tử phân chia modulo. & nbsp; To check given number is divisible by 7 or not by using modulo division operator “%”.
C++
=
1
=
2 =
3 =
4
35 is divisible by 7 and 5.0
35 is divisible by 7 and 5.25
=
9
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.0
21.a - a + 2.b37
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
21.a - a + 2.b40
20.a + 2.b3
21.a - a + 2.b42
21.a - a + 2.b43
35 is divisible by 7 and 5.88
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.23
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.38
=
920.a + 2.b3
21.a - a + 2.b42
21.a - a + 2.b52
35 is divisible by 7 and 5.88
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.23
35 is divisible by 7 and 5.23
Java
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.00
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.01
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.02
10.a + b55
21.a - a + 2.b61
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.55
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.06
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.57
21.a - a + 2.b65
21.a - a + 2.b61
=
970 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.0
21.a - a + 2.b70
21.a - a + 2.b71
35 is divisible by 7 and 5.36
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
21.a - a + 2.b75
35 is divisible by 7 and 5.0
21.a - a + 2.b777
10.a + b1
21.a - a + 2.b79
10.a + b4
21.a - a + 2.b81
21.a - a + 2.b82
21.a - a + 2.b83
21.a - a + 2.b43
35 is divisible by 7 and 5.88
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.23
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.38
=
921.a - a + 2.b82
21.a - a + 2.b83
21.a - a + 2.b52
35 is divisible by 7 and 5.88
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.23
21.a - a + 2.b61
35 is divisible by 7 and 5.23
35 is divisible by 7 and 5.23
Python3
-a + 2b00
=
21.a - a + 2.b71
Java
21.a - a + 2.b61
20.a + 2.b4
35 is divisible by 7 and 5.1
21.a - a + 2.b43
35 is divisible by 7 and 5.3
35 is divisible by 7 and 5.38
20.a + 2.b2
21.a - a + 2.b61
20.a + 2.b4
35 is divisible by 7 and 5.1
21.a - a + 2.b52
35 is divisible by 7 and 5.3
C#
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.00
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.01
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.02
10.a + b55
21.a - a + 2.b61
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.55
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.06
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.57
21.a - a + 2.b65
21.a - a + 2.b61
=
970 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.0
21.a - a + 2.b37
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
21.a - a + 2.b40
21.a - a + 2.b82
20.a + 2.b05
21.a - a + 2.b43
35 is divisible by 7 and 5.88
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.23
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.38
=
921.a - a + 2.b82
20.a + 2.b05
21.a - a + 2.b52
35 is divisible by 7 and 5.88
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.23
21.a - a + 2.b61
35 is divisible by 7 and 5.23
35 is divisible by 7 and 5.23
Java
20.a + 2.b84
-a + 2b63
-a + 2b64
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.00
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.01
-a + 2b68
21.a - a + 2.b18
21.a - a + 2.b43
35 is divisible by 7 and 5.3
-a + 2b63
35 is divisible by 7 and 5.38
-a + 2b68
21.a - a + 2.b18
21.a - a + 2.b52
35 is divisible by 7 and 5.3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.02
10.a + b55
21.a - a + 2.b
6170 is divisible by 7 and 5.
105 is divisible by 7 and 5.
140 is divisible by 7 and 5.
55 70 is divisible by 7 and 5.
105 is divisible by 7 and 5.
140 is divisible by 7 and 5.
06 70 is divisible by 7 and 5.
105 is divisible by 7 and 5.
140 is divisible by 7 and 5.
57 21.a - a + 2.b
65
20.a + 2.b17
21.a - a + 2.b61
-a + 2b82
-a + 2b83
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.0
21.a - a + 2.b70
21.a - a + 2.b71
35 is divisible by 7 and 5.36
=
9
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
21.a - a + 2.b75
35 is divisible by 7 and 5.0
21.a - a + 2.b777
10.a + b1
21.a - a + 2.b79
10.a + b4
21.a - a + 2.b81
35 is divisible by 7 and 5.23
35 is divisible by 7 and 5.38
=
9
Is
a - 2b00
20.a + 2.b83
=
2 10.a + b
53 Checking given number is divisible by 7 or not using modulo division.
C++
a - 2b02
=
2 =
3 =
4
35 is divisible by 7 and 5.0
35 is divisible by 7 and 5.25
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.0
21.a - a + 2.b37
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
21.a - a + 2.b40
20.a + 2.b3
35 is divisible by 7 and 5.34
a - 2b16
35 is divisible by 7 and 5.36
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.23
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.38
=
920.a + 2.b3
35 is divisible by 7 and 5.34
a - 2b25
35 is divisible by 7 and 5.36
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.23
Java
35 is divisible by 7 and 5.23
Java
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.00
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.01
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.02
10.a + b55
21.a - a + 2.b61
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.55
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.06
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.57
21.a - a + 2.b65
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.0
21.a - a + 2.b70
21.a - a + 2.b71
35 is divisible by 7 and 5.36
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
21.a - a + 2.b75
35 is divisible by 7 and 5.0
21.a - a + 2.b777
10.a + b1
21.a - a + 2.b79
10.a + b4
21.a - a + 2.b81
20.a + 2.b3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.70
a - 2b16
35 is divisible by 7 and 5.88
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.23
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.38
=
920.a + 2.b3
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.70
a - 2b25
35 is divisible by 7 and 5.88
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.23
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.23
35 is divisible by 7 and 5.23
C#
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.00
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.01
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.02
10.a + b55
21.a - a + 2.b61
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.55
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.06
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.57
21.a - a + 2.b65
21.a - a + 2.b61
=
970 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.0
21.a - a + 2.b37
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.8
21.a - a + 2.b40
21.a - a + 2.b82
a - 2b92
a - 2b16
35 is divisible by 7 and 5.88
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.23
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.38
=
921.a - a + 2.b82
a - 2b92
a - 2b25
35 is divisible by 7 and 5.88
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
35 is divisible by 7 and 5.23
21.a - a + 2.b61
35 is divisible by 7 and 5.23
35 is divisible by 7 and 5.23
Python3
Java
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.00
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.01
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.7
20.a + 2.b4
35 is divisible by 7 and 5.1
start_num
2335 is divisible by 7 and 5.3
35 is divisible by 7 and 5.38
20.a + 2.b2
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.02
10.a + b55
21.a - a + 2.b61
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.55
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.06
70 is divisible by 7 and 5. 105 is divisible by 7 and 5. 140 is divisible by 7 and 5.57
21.a - a + 2.b65
References:
//en.wikipedia.org/wiki/Divisibility_rule
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