Question

What digit must be placed in the blank 31 3__7 to make the number divisible by 9?

Answer 1

Answer:

4

Step-by-step explanation:

because to make this number divisible by 9..we need to emsure that sum of all the digits is divisible by 9

let req digit be x

:. 3+1+3+x+7 = 14+x

now the nearest number to 14 which is divisible by 9 is 18 so x= 4