Tagged with 57

#math trivia #57 solution

#math trivia for #February26: #57 = 3*19 — a product using each odd digit once. Are there any other products of this form? — Burt Kaliski Jr. (@modulomathy) February 26, 2012 Let’s think about what a solution might look like. The general form needs to be ab = c*de where a, b, c, d and … Continue reading