We Got A Problem #9: Yearly Multiplication
November 30, 2012 1 Comment
This Saturday (December 1, 2012) gets written as a short date as 12/1/12 (or, outside the US, generally 1/12/12). Either way, it’s interesting because 12 x 1 = 12. That’s happened a lot this year, including June 2.
1. How many times in a century will this happen? It happened once in 2001, twice in 2002.
2. In what year(s) will this happen the most times? Are there years when it won’t happen?
3. Days like 12/12/44 or 8/25/00 sort of work: 12 x 12 = 144, which you’d write as 44 in a two-digit year. If you include these days too, how many times in a century does it happen? Cooool.