Crux Mathematicorum Vol. 46, No. 3 « v46, n2 indexv46, n4 » March, 2020 PageContents 97 Upcoming special issue in memory of Richard Guy 98 MathemAttic: No. 13 98 Problems: MA61–MA65 102 Solutions: MA36–MA40 107 Teaching Problems: No. 9 — Erick Lee 111 Olympiad Corner: No. 381 111 Problems: OC471–OC475 113 Solutions: OC446–OC450 117 Focus On . . . : No. 40 — Michel Bataille 123 Problems: 4521–4530 129 Solutions: 4471–4480 Read the issue below Download this issue (PDF) Crux Mathematicorum