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If \(\sqrt{3}=\frac{p}{q}\) is assumed to be in lowest terms, which statement produces the contradiction in the proof of its irrationality?

Answer and explanation

Correct answer: Both \(p\) and \(q\) are divisible by 3

From \(3q^2=p^2\), \(p^2\) is divisible by 3, so \(p\) is divisible by 3. Substitution then shows that \(q\) is also divisible by 3, contradicting lowest terms. Exam tip: check for a common factor in both numerator and denominator.

Related tags

Number SystemsIrrational NumbersProof By ContradictionSquare Root 3Class 9 MathematicsProof Of Irrationality Of Square Root 2 And Square Root 3MathematicsClass 9 Mcq

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