Question

72a384 is a number in which one of the digits in which one of the digit is ' a' . if the number is exactly divisible by 9 ,what is the numerival value of 'a'?

Answer 1

ans is 3.
7+2+a+3+8+4 is divisible by 9
24+a is divisible by 9
the nearest no.of 24 which is divisible by 9 is 27
27-24 is 3

the given no is divisible by 3 when it is replaced in the place of a

hope you find it useful..

Answer 2

The value of a is 3

GIVEN

72a384 is a number in which one of the digits in which one of the digit is ' a' and the number is exactly divisible by 9.

TO FIND

Value of 'a'

SOLUTION

We can simply solve the above problem as follows;

We know that,

A number will be divisible by 9 If the sum of digits of the number is divisible by 9.

Given,

72a384 is divisible by 9

This means that the sum of digits is also divisible by 9

Sum of the digits = 7+2+a+3+8+4 = 24+a

Therefore,

24+a is also divisible by 9

We know that the number nearest to 24 is 27 which is divisible by 9

So,

24 + a = 27

a = 27-24 = 3

Hence, The value of a is 3

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