The least number by wh

Question

The least number by which 1470 must be divided to get a number which is a perfect square is :

Options:

A . 5

B . 6

C . 15

D . 30

Answer: Option D

1470= 7 x 7 x 5 x 6 . To make it a perfect square . it must be divided by 5 x 6, i.e. , 30

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