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Question

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


Options:
A .  50
B .  40
C .  45
D .  48
Answer: Option A

Clearly , 4320  =  `2^3 xx 3^3 xx 2^2 xx 5`.

              To make it a perfect cube , it must be multiplied by `2 xx 5^2`     i.e. 50.




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