If the number 1005×4 is completely divisible by 8, then the smallest integer in place of x will be:
(a) 2
(b) 4
(c) 1
(d) 0
Sol:
For any number to be divisible by 8, its last 3 digits must be divisible by 8
By putting x=0 in 1005×4, we see that 504 will be divisible by 8.
