Which is the smallest no which divides 2880 and gives a perfect square?  Options:
A) 4 B) 9 C) 3 D) 5 E) 7
2880=20*144(because w.k.t 144 is perfect square)   =2*10*144   =2*2*5*144   =4*5*144(here 4 and 144 are perfect square)   so the smallest number is 5   ANSWER:5
<result>D</result>
Which is the smallest no which divides 2880 and gives a perfect square?