The areas of three squares are 16, 49 and 169. What is the average (mean) of their side lengths?
(A) 8 (B) 12 (C) 24 (D) 39 (E) 32
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.