Maths Olympiad Prep

Library / /23 of 356

, 1998

Number theory Difficulty 1.0 Junior Find the answer Canada

If S=6×10000+5×1000+4×10+3×1S = 6 \times 10\,000 + 5 \times 1000 + 4 \times 10 + 3 \times 1, what is SS?

(A) 65436543 (B) 6504365\,043 (C) 6543165\,431 (D) 6540365\,403 (E) 6054160\,541

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