Solved problems
Two triangles nested in a half circleAménagement de jardinFRHow to split a chocolate barCoins in the riverUne thèse bien longue...FRThe group of units of ℤ/nℤProlongement par continuité avec partie entièreFRCanoeing during heat waveA bad deal in French TarotThe Monty Hall ParadoxThe canonical inner product on real matricesAbsolute cinemaFRCoffee now, regret laterEstimating altitude from atmospheric pressureHow can you prove you know a secret without revealing it?From a function series to Nar-mayas and the caravan master