Question

Replace * by the smallest no. By the no. Mentioned 85 * 63 by 9

Answer 1

Answer:

If the sum of the digits of a number is divisible by 9 then the number is divisible by 9.

8 + 5 + x + 6 + 3 = 22 + x

we know that 22 is not divisible by 9

22 is nearer to 27 which is divisble by 9

Hence ( 27 -22 = 5)

5 is the smallest number to make 85*63 divisible by 9.