The king and his wine combinatorics problem
114000
Logic problem: Identifying poisoned wines out of a sample, minimizing test subjects with constraints
156383
Proving a combinatorial identity without double counting
37629
Combinatorial card game
126297
A high school Olympiad problem
150281
Am I on the right track to figure out this combinatorics problem?
72052
Combinatorics the number of options for $k$ different balls in n different cells, with at least $1$ ball in each cell
26569
Counting binary operations on a set with $n$ elements
41205
Help me solve a combinatorial problem
134938
Committee combinatorics
10839
Problem in Cardinality and Order
73323
Permutations when some objects are alike
86067
A Variation of the even-town odd-town problem
84721
Probability combinatorics deck of cards
10272
A three-way duel (probability puzzle)
70282
Help finding a combinatorial proof of $k {n \choose k } = n {n - 1 \choose k -1}$
24212
proving how many permutations exist.
107110
Solving Rubik's cube and other permutation puzzles