In QCQ, when we try to choose #s , anyone has a clue when do I have to test fractions such as 1/2 or 1/4 … etc ? Usually, extremes and +, -ve integers work but I faced some questions that doesn’t.

I usually like testing fractions regardless on a QC question just to be sure but I definitely use fractions when the interval is tiny, so for example I will def choose fractions if they say 1<x<3 or something like that

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i think you should fraction, when we need to square a variable.

example - x^2 , (x-1)^2

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