A holiday-season fun challenge: this problem was originally given to children applying for admission to a kindergarten for gifted children in Nagoya, Japan — and 74% of them solved it. Hint: the children could count up to 10.
(In the spirit of the original post, the puzzle image itself isn’t reproduced here — but if you enjoy a good “kids can solve this, can your decision model?” challenge, it’s a fun one to track down.)
Send your solutions to DecisionManagementCommunity@gmail.com, or open a pull request to add yours here.