Given the following reasoning and answer, what was the question? Other number = (12 x 520)/480 = 13.
 The answer: (A)
The question The H.C.F. of two numbers is 12 and their L.C.M. is 520. If one of the numbers is 480, then the other is:
Options:
(A) 13
(B) 18
(C) 21
(D) 24
(E) 38