Crux Mathematicorum Vol. 51, No. 10 « v51, n9 indexv52, n1 » December, 2025 PageContents 450 Editorial — Kseniya Garaschuk 451 MathemAttic: No. 70 451 Problems: MA346 – MA350 453 Solutions: MA321 – MA325 458 A Method Involving Muirhead's Inequality Applied on Five Inequality Problems from Around the World — Hüseyin Yiğit Emekçi 464 Olympiad Corner: No. 438 464 Problems: OC756 – OC760 466 Solutions: OC731 – OC735 472 Problems: 5091 – 5100 477 Solutions: 5041 – 5050 Read the issue below Download this issue (PDF) Crux Mathematicorum