Questions tagged [combinatorics]
A puzzle based on combinatorics, which is the study of counting discrete structures. Use with [mathematics]
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How many squares in a large square [closed]
How many squares of all sizes can be found on a large square made of 10000 small squares? I don't want to try them out or count them. I tried finding a pattern, as in a square made of 1^2 small square ...
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Strategy for determining graph traversal rules yielding exactly one distinct graph traversal under every permutation [closed]
I am looking for advice/guidance/solutions which can help me with the following problem:
Imagine a spatial graph in the x,y-plane arranged in an m x n grid
e.g. a 4x4 grid
Each vertex in the graph ...
- 111
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Strategy for solving "Hypatian Enigma" puzzle (all lines add to 38)
The "Hypatian Enigma" puzzle consists of 19 hexagonal blocks numbered 1 through 19.
The blocks are arranged in 5 rows. The first and last rows have 3 blocks, the second and fourth row has 4 ...
- 111
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Filling a rectangular grid with holes using tetrominoes
There is a rectangular grid of $R$ rows and $C$ columns. $R \times C \bmod 4$ of the cells are painted black, and all other cells are white. In other words, there are at least 0 and at most 3 black ...
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