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GMATPrep Q1
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450y=n^3
y=n^3/450
y needs to be positive integer
450 = 2*3*3*5*5
Need n^3 = 450*k so that y is integer (as N^3 divided by 450)
n^3 needs to be 2*2*2*3*3*3*5*5*5 (i.e. 2*3*5 to the third power) = 27000
y = 60
==> only 1 works
y=n^3/450
y needs to be positive integer
450 = 2*3*3*5*5
Need n^3 = 450*k so that y is integer (as N^3 divided by 450)
n^3 needs to be 2*2*2*3*3*3*5*5*5 (i.e. 2*3*5 to the third power) = 27000
y = 60
==> only 1 works
