Library / /120 of 413

, 1999

Number theory Difficulty 1.0 Junior Find the answer Canada

The sum of seven consecutive positive integers is always

(A) odd (B) a multiple of $7$ (C) even (D) a multiple of $4$ (E) a multiple of $3$

Want a route through all this instead of an archive? The track puts 2,604 problems in a working order, from Junior Challenge level to the IMO shortlist.

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.