Math riddles and puzzles come in plenty of different varieties. Some more straightforward number puzzles require calculations ...

You may weigh the coins on a pointer scale. What is the smallest number of weighings necessary to determine which stack is counterfeit? Show puzzle solution The counterfeit stack can be identified ...

Experience math in a whole new way. We'll play fun and challenging problem-solving games and puzzles from around the world ... Space is limited so please limit the number of personal items brought ...