Tagged with 122

#math trivia #122 solution

#math trivia for #May1: #122 reversed is #221, also a day-number (1-366). How many day-numbers have this property? (Leading 0s not allowed.) — Burt Kaliski Jr. (@modulomathy) May 1, 2012 All of the one-digit day-numbers, 1-9, when reversed, are themselves, so have the property.  That’s 9. All of the two-digit day-numbers, 10-99, when reversed, are … Continue reading