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Which number is rational but not an integer?

Answer and explanation

Correct answer: \(\frac{9}{4}\)

\(\frac{9}{4}\) is the ratio of two integers, 9 and 4, so it is rational. Its value is 2.25, which is not an integer. Both \(-4\) and \(\sqrt{16}=4\) are integers, whereas \(\sqrt{7}\) is irrational. Exam tip: first check whether a number can be written as \(\frac{p}{q}\), where \(p,q\) are integers and \(q\ne0\), then check whether its value is an integer.

Related tags

Number SystemsRational NumbersIntegersSquare RootsFractionsMathematicsClass 9 Mcq

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