Numbers Q11

11.If x and y are the two digits of the number 653xy such that this number is divisible by 80, then x + y is equal to :

[A] 2

[B] 3

[C] 4

[D] 6

Answer : [A]

Explanation :

Since 653xy is divisible by 5 as well as 2, so y = 0.

Now, 653x0 must be divisible by 8.

So, 3x0 must be divisible by 8. This happens when x = 2

x + y = (2 + 0) = 2.