Numbers - General Aptitude

Q1:

If the number 653 xy is divisible by 90, then (x + y) = ?

A 2

B 3

C 4

D 6

ANS:C - 4

90 = 10 x 9 Clearly, 653xy is divisible by 10, so y = 0 Now, 653x0 is divisible by 9. So, (6 + 5 + 3 + x + 0) = (14 + x) is divisible by 9. So, x = 4. Hence, (x + y) = (4 + 0) = 4.