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By what least number 4320 be multiplied to obtain a number which is a perfect cube?


 

A. 32

B. 56

C. 52

D. 50

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Correct Answer : D.


       Clearly, 4320 = 23 * 33 * 22 * 5.


       To make it a perfect cube, it must be multiplied by 2 * 52 i=50.

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