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, 2016

Number theory Difficulty 2.0 Junior Find the answer United Kingdom

What is the smallest square that has 2016 as a factor?

(A) $42^2$ (B) $84^2$ (C) $168^2$ (D) $336^2$ (E) $2016^2$

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Source: UK Mathematics Trust, licensed © UK Mathematics Trust; past papers published free at ukmt.org.uk. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.