Question

Which two numbers have a least common multiple of 60? A. 12 and 15 B. 6 and 10 C. 6 and 15 D. 6 and 12

Answer 1

The least common multiple is the littlest multiple that two or more numbers have in common (e.g 12 for 2, 3, 4 and 6).

A. 12, 24, 36, 48, 60; 15, 30, 45, 60

B. 6, 12, 18, 24, 30, 36, 42, 48, 54, 60; 10, 20, 30, 40, 50, 60

C. 6, 12, 18, 24, 30, 36, 42, 48, 54, 60; 15, 30, 45, 60

D. 6, 12, 18, 24, 30, 36, 42, 48, 54, 60; 12, 24, 36, 45, 60

The answer is A.