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Question

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


A

5

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B

6

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C

15

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D

30

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E

45

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Solution

The correct option is D

30


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


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