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 occurs 34 times. (I guessed this based on the observation that the largest digit-sum is 20, and the smallest is 1, but needed to run a spreadsheet to confirm it.)

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