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all the integers that are both perfect squares and cubes but that are less than 20 000
 Oct 16, 2013

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The cube root of 20000 is 27 and a bit.
So if you look at all th numbers from 1cubed to 27cubed and choose the ones that are also squared.
It wouldn't take all that long to do so long as you have a calculator.
 Oct 17, 2013

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