Crux Mathematicorum Vol. 52, No. 4 « v52, n3 indexlast April, 2026 PageContents 162 MathemAttic: No. 74 162 Problems: MA366 – MA370 164 Solutions: MA341 – MA345 168 Teaching Problems: No. 31 — John Grant McLoughlin 171 Competition Highlights — Richard Hoshino 174 Olympiad Corner: No. 442 174 Problems: OC776 – OC780 176 Solutions: OC751 – OC755 185 Geometric, Arithmetic and Root-Mean Squares — Ed Barbeau 187 Problems: 5131 – 5140 191 Solutions: 5081 – 5090 Read the issue below Download this issue (PDF) Crux Mathematicorum