Permutation & Combination Doubt!
94388
SAT Probability and Counting
131863
Permutation question on alphabets
148703
Permutations with repeating digits
78622
How to understand the combination formula?
94836
Total combinations from number of unique combination?
27610
Given the permutation $\sigma=\left(\begin{array}{ccccc} 1&2&3&4&5\\ 3&1&2&5&4 \end{array}\right)$
69827
Set conditions at a permutation
42062
Interpretation of a combinatorial expression
107027
Number of combinations and permutations of letters
98313
Number of possible permutations of n1 1's, n2 2's, n3 3's, n4 4's such that no two adjacent elements are same?
27141
Combinatorics identity question
24212
proving how many permutations exist.
35648
How many permutations of the set n={1,2,3,3,3,4,4,5} are possible without any consecutive identical elements?
9411
Number of permutations of $n$ elements where no number $i$ is in position $i$
17268
Cycles in permutations of a given size
4555
How to write permutations as product of disjoint cycles and transpositions
5801
Combinatorial proof help