Burt Kaliski Jr. (@modulomathy) 4/10/12 7:49 PM #math trivia for #April10: #101 is one of six day-numbers this year whose digits sum to 2. What are the others? What’s the most common sum? The other day-numbers with a digit-sum of 2 are 2, 11, 20, 110, and 200. The most common digit-sum is 10, which … Continue reading