question_answer

The least perfect square exactly divisible by each of the numbers 6, 9, 15 and 20 is

A) 3600                           

B) 900

C) 400                             

D) 225

Correct Answer: B

Solution :

\[\frac{a}{b}\]  L.C.M \[\frac{c}{d}\] The least multiple of 180 which is a perfect square is \[\frac{a}{b},\frac{c}{d}\in Q\]