Question

check the divisibility of 15387 by 3​

Answer 1

It is easy
15387/3
1+5+3+8+7 = 24
And 24 is divisible by 3
Therefore 15387 is divisible by 3

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Answer 2

HELLO MATE

SO,When a number is divisive by 3 ?

A number is divisible by 3 if the sum of the digits is divisible by 3.

So, Sum of digits of 15387 = 1+5+3+8+7=24.

And 3 × 8 = 24.

So, 24 is divisible by 3 .

Therefore 15387 is divisible by 3.