Question

write a program to know whether a number is exactly divisible by 13 or not​

Answer 1

Answer:

A number is divisible by 13 if and only if the number is formed by adding last digit multiplied by 4 to rest is also divisible by 13. For example, consider 2353. Applying above rule, we get 235 + 3*4 = 247. Since 52 is divisible by 13, given number is divisible by 13.

Answer 2

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• A number is divisible by 13 if and only if the number is formed by adding last digit multiplied by 4 to rest is also divisible by 13. For example, consider 2353. Applying above rule, we get 235 + 3*4 = 247. Since 52 is divisible by 13, given number is divisible by 13.