Question

Mark (✓) against the correct answer
If 7x8 is exactly divisible by 3, then the least value of x is
(a) 3
(b) 0
(c) 6
(d) 9

Answer 1

(b) 0
If a number is exactly divisible by 3, the sum of its digits is also divisible by 3.

$7+x+8=15+x$

$15+x$ can be divisible by 3 even if x is equal to 0.