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If \(\sqrt{3}=\frac{m}{n}\) is assumed, where \(m\) and \(n\) are coprime integers, which conclusion produces the contradiction?

Answer and explanation

Correct answer: Both \(m\) and \(n\) are divisible by 3

From \(3n^2=m^2\), \(m^2\), and hence \(m\), is divisible by 3. Putting \(m=3k\) shows that \(n\) is also divisible by 3, contradicting coprimality. Exam tip: identify the common factor causing the contradiction.

Related tags

Number SystemsIrrational NumbersSquare Root 3Proof By ContradictionCoprime IntegersProof Of Irrationality Of Square Root 2 And Square Root 3MathematicsClass 9 Mcq

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