SOLUTION: general condition on n which guarantees that the square root of the nth cube number is a whole number

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Question 27121: general condition on n which guarantees that the square root of the nth cube number is a whole number
Answer by venugopalramana(3286) About Me  (Show Source):
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general condition on n which guarantees that the square root of the nth cube number is a whole number
do you mean square root of n^3 should be whole number?
if so obviously
square root of n^3 =n*square root of n...hence n should be a perfect square.