Question

If 31m4 is divisible by 3? Then find m .​

Answer 1

For any number to be divisible by 3 the sum of all digits must be divisible by 3.

Now

3 + 1 + m + 4 = 8 + m

To make this number divisible by 3, m could be

1, 4, and 7.

As,

8 + 1 = 9, 8 + 4 = 12, 8 + 7 = 15

All of which are divisible by 3.

Welcome in advance

Answer 2

Answer:

Here is your solution.. Thanks