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Re: If x^2/4 is an integer greater than 50 and x is a positive i [#permalink]
08 Jul 2018, 01:27

Carcass wrote:

\(\frac{x^2}{4} > 50\)

50*4 = 200 which means that \(x^2\) must be > 200.

The only number > 200 AND at the same time the smallest possible value is 16. \(16^2 = 256\)

Notice also that X must be a number divisible by 4.

Hope this helps.

Regards

Thanks Carcass, it's clear. But why you started off from 16? Why if the number is extremely large? I think this could works with small numbers, but it might get knotty with complex once.