Question

If x and y are the two digits of the number 653xy such that this number is divisible by 80, then x + y =?

• A. 6
• B. 4
• C. 8
• D. 4 or 8

Answer 1

The correct option is A

6

We have,
$80=2\times 5\times 8$
Since 653xy is divisible by 2 and 5 both, y = 0.
Now, 653x is divisible by 8. So, 53x should also be divisible by 8.
This happens when x = 6.
$\therefore$ x + y = (6 + 0) = 6