Which of the following best defines a counterexample in mathematics?

MATHEMATICS · Single correct · A Level · Mathematics · Proof · Proof

Problem

Which of the following best defines a counterexample in mathematics? (a)

\text{A logical sequence that proves a conjecture false.}

(b)

\text{A specific case that demonstrates a conjecture is false.}

(c)

\text{A specific case that supports a conjecture.}

(d)

\text{A statement accepted without proof as true.}