Maths Olympiad Prep

Library / /43 of 472

, 2005

Algebra Difficulty 1.0 Junior Find the answer Canada

The sum of the first 2005 terms of the sequence 1,2,3,4,1,2,3,4,1, 2, 3, 4, 1, 2, 3, 4, \ldots is

(A) 50115011 (B) 51105110 (C) 50205020 (D) 50105010 (E) 501501

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.