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If √3 were rational, which statement about p/q should be correct?

Answer and explanation

Correct answer: p and q are coprime and q ≠ 0

When a number is assumed to be rational, it can be represented as p/q with p and q integers, q ≠ 0, and the fraction reduced to lowest terms. Lowest terms means that p and q are coprime, so they have no common divisor greater than 1. This condition is essential because the proof later derives that both are divisible by 3, producing the contradiction. Option A describes the result obtained later, not the initial assumption. Options C and D are impossible because a denominator cannot be zero and p/q would not be a valid reduced representation if both were zero. Therefore option B correctly states the required starting condition.

Related tags

Number-SystemsRational-FormSquare-Root-3Proof Of Irrationality Of Square Root 2 And Square Root 3Number SystemsMathematicsClass 9 Mcq

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