a, b are positive integers. The remainder of a to be divided by 8 is 3 and the remainder of b to be divided by 6 is 5.
Which is possible to be the remainder of a*b to be divided by 48
Pick one.
A) 2	B) 6	C) 8	D) 15	E) 20

Rationale: two ways to do it . . . a = 8 x + 3 . . b = 6 y + 5 . . 1 ) convenient way . . take x and y as 0 , and you will get a * b as 3 * 5 = 15 answer : d
Answer: D