Wednesday, January 30, 2013

Wednesday brain teaser 1-30-13

What is unique about the number 854,917,632?

(Two part answer)


  1. I only have one part: other than zero, it's the first nine digits in alphabetical order. It's also divisible by nine.

    1. Good job! That's actually both parts (the first person I ran it by said "it's all nine digits" so I meant to elaborate that it was more than that.

      The alphabetical part is key.

      I love this problem because you really have to switch parts of your brain to get it. First numbers as digits, then numbers as words.