If the L.C.M of two numbers is 600 and their product is 18000, find the H.C.F of the numbers. Choose the most appropriate option.
A) 50
B) 30
C) 125
D) 25
E) none of these

Rationale: "h . c . f = ( product of the numbers ) / ( their l . c . m ) = 18000 / 600 = 30 . answer : b"
Answer: B