Puzzle #73 Solution: Hallowe’en Candy Calling Spoiler Inside: Solution to Puzzle SelectShow> This could be a complicated combinatorics problem with lots of combinations to cover, but it is helpful to check if a problem is really that complicated. Sometimes, it is not, like this one. At most, you take ten candies per day. You take candies for 17 days. That means that, at most, you would take 170 candies. Since there are 200, the probability is 0 that the bag will run out.