Question

Find the digit that makes _2,530 divisible by 9. a.6 b.5 c.7 d.8

Answer 1

8 is the answer i believe

Answer 2

Option d.

Explanation:

The given number is

_2,530

We need to find the missing digit so that the given number is divisible by 9.

Rule of divisibility of 9 : If the sum of all digits of a number is divisible by 9, then that number must be divisible by 9.

The sum of given digits is

`2+5+3+0=10`

If the missing number is 6, then sum of all digits is

`6+10=16`

16 is not divisible by 9, so 6 can not be the missing number.

If the missing number is 5, then sum of all digits is

`5+10=15`

15 is not divisible by 9, so 5 can not be the missing number.

If the missing number is 7, then sum of all digits is

`7+10=17`

17 is not divisible by 9, so 7 can not be the missing number.

If the missing number is 8, then sum of all digits is

`8+10=18`

18 is divisible by 9, so the missing number is 8.

Therefore, the correct option is d.