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Results tagged with puzzle
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user 11108
Recreational mathematics or puzzles with serious mathematical content. Note that math contest problems are generally considered off-topic.
29
votes
Accepted
Hard Cube Puzzle
This is a variation on a classic card trick (audience pick 5 cards, magician A removes a card of his choosing and hands the rest to magician B, who then names the missing card.)
There are two ways yo …
- 1,810
11
votes
Integers in a triangle, and differences
For small values of $n$, there is a relatively small state space to search.
In the most naive way possible, I found the following (showing the top row of triangle only):
1: 1 way: [1]
2: 4 ways: [1, …
- 1,810