24 December 2024

Difficult math puzzle


Discussion at a puzzles subreddit thread, with best explanation here.

1 comment:

  1. Ooh, this is a good one. Couple early thoughts:
    1. By the time the puzzle said "divisible by 9," the reader could already have deduced that fact.
    2. The middle digit is 5.

    ReplyDelete

Related Posts Plugin for WordPress, Blogger...