Maths Olympiad Prep

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Problem 11

Number theory Difficulty 1.0 Find the answer CEMC Gauss (Grade 8) · Canada · 1999

Which one of the following gives an odd integer?

(A) 626^2 (B) 231723 - 17 (C) 9×249 \times 24 (D) 9×419 \times 41 (E) 96÷896 \div 8

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Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty, ordering) added by this project. Solutions are the publisher's, linked not copied.