Library / CEMC Gauss (Grade 8) /388 of 525

CEMC Gauss (Grade 8), 2010

Algebra Difficulty 2.0 Junior Find the answer Canada

If four different numbers are chosen from $5, 6, 7, 8, 9$ to replace the $\square$ 's below, what is the smallest possible sum of the two 2-digit numbers? $\square\square + \square\square$

(A) $123$ (B) $125$ (C) $126$ (D) $134$ (E) $161$

Figure for this problem

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.