#math trivia for #September28: #271 is a permutation of digits 1, 2, 7. Which other day-numbers (1-365) are a permutation of these digits? — Burt Kaliski Jr. (@modulomathy) September 29, 2013 There are six possible permutations of any three distinct digits; in this case, the six possibilities are: 127 172 217 271 712 721 However, … Continue reading →