Question

If 17x8 is exactly divisible by 9, then the least value of x is
(a) o
(b) 2
(c) 3
d 5
​

Answer 1

Answer:

b)2 because we can check the divisiblity of 9 by the sum of number.

here,1+7+8=16

18 is the nearest multiple of 9 (here)

so 18-16=2