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Crux Mathematicorum
Vol. 51, No. 9
November, 2025
PageContents
403 MathemAttic: No. 69
403 Problems: MA341 – MA345
405 Solutions: MA316 – MA320
411 Problem Solving Vignettes: No. 39 — Shawn Godin
415 The Usefulness of Formulas in Solving Matrix Problems — Florin Stanescu
420 Olympiad Corner: No. 437
420 Problems: OC751 – OC755
422 Solutions: OC726 – OC730
428 Problems: 5081 – 5090
432 Solutions: 5031 – 5040