Maths Olympiad Prep

Library / CEMC Gauss (Grade 8) /95 of 525

CEMC Gauss (Grade 8), 2003

Algebra Difficulty 1.0 Junior Find the answer Canada

When the numbers 5\sqrt5, 2.12.1, 73\frac{7}{3}, 2.05‾2.0\overline{5}, 2152\frac{1}{5} are arranged in order from smallest to largest, the middle number is

(A) 5\sqrt5 (B) 2.12.1 (C) 73\frac{7}{3} (D) 2.05‾2.0\overline{5} (E) 2152\frac{1}{5}

We don't reproduce this publisher's solutions. Their own solution is here — work the problem first.
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.