Crux Mathematicorum Vol. 45, No. 9 « v45, n8 indexv45, n10 » November, 2019 PageContents 495 MathemAttic: No. 9 495 Problems: MA41–MA45 497 Solutions: MA16–MA20 500 Teaching Problems: No. 6 — John McLoughlin 504 Olympiad Corner: No. 377 504 Problems: OC451–OC455 506 Solutions: OC426–OC430 511 Focus On . . . : No. 38 — Michel Bataille 518 Problems: 4481–4490 524 Solutions: 4431–4440 536 Snapshot Read the issue below Download this issue (PDF) Crux Mathematicorum