Question

Counting all possible arrangements given a subset cannot appear consecutively inside a permutation.

score 14 · Answer 1 · 2026-04-17 02:14:50

14

Views

Counting all possible arrangements given a subset cannot appear consecutively inside a permutation.

Published on 17 Apr 2026 - 2:14

score 700 · Answer 2 · 2026-04-15 15:06:58

700

Views

Formalizing "the symmetry group of a non-square rectangle"

Published on 15 Apr 2026 - 15:06

score 485 · Answer 3 · 2026-04-13 07:08:12

Intuitive and memorable way to see N1/n1!n2! as distinct permutations of N objects with n1 of one type and n2 of other. N = n1+n2

score 36 · Answer 4 · 2026-04-11 20:34:57

36

Views

$r$-Permutations of $n$ things of $k_1,...,k_j$ kinds.

Published on 11 Apr 2026 - 20:34

score 63 · Answer 5 · 2026-04-10 19:42:27

63

Views

Counting all possible way of onto function

Published on 10 Apr 2026 - 19:42

score 85 · Answer 6 · 2026-04-11 18:32:10

85

Views

Summation of sgn function

Published on 11 Apr 2026 - 18:32

score 476 · Answer 7 · 2026-04-13 06:15:19

476

Views

Alternating groups using three-cycles

Published on 13 Apr 2026 - 6:15

score 66 · Answer 8 · 2026-03-27 08:57:32

66

Views

Average value of $x_1x_2+x_2x_3+x_3x_4+\cdots+x_{10}x_1$

Published on 27 Mar 2026 - 8:57

score 106 · Answer 9 · 2026-04-12 11:23:36

How many ways can 4 things of type A, 4 things of type B, and 4 things of type C be arranged so no two things of the same type are seated together?

score 113 · Answer 10 · 2026-04-15 11:29:59

113

Views

Combinatorics: Creating a password with characters, numbers, and one special character

Published on 15 Apr 2026 - 11:29

score 1.6k · Answer 11 · 2026-04-11 13:41:04

1.6k

Views

Grouping of guides and tourists

Published on 11 Apr 2026 - 13:41

score 113 · Answer 12 · 2026-04-11 14:03:01

113

Views

Problem in polynomials related to permutation of number of solution

Published on 11 Apr 2026 - 14:03

score 77 · Answer 13 · 2026-04-17 08:02:42

77

Views

System of equations invariant under a permutation.

Published on 17 Apr 2026 - 8:02

score 69 · Answer 14 · 2026-04-10 22:30:12

69

Views

Possible Passwords Help (combination/permutations)

Published on 10 Apr 2026 - 22:30

score 110 · Answer 15 · 2026-04-16 10:52:06

110

Views

Find the number of distinct equivalence classes that can be formed out of S

Published on 16 Apr 2026 - 10:52

List Question

Counting all possible arrangements given a subset cannot appear consecutively inside a permutation.

Formalizing "the symmetry group of a non-square rectangle"

Intuitive and memorable way to see N1/n1!n2! as distinct permutations of N objects with n1 of one type and n2 of other. N = n1+n2

$r$-Permutations of $n$ things of $k_1,...,k_j$ kinds.

Counting all possible way of onto function

Summation of sgn function

Alternating groups using three-cycles

Average value of $x_1x_2+x_2x_3+x_3x_4+\cdots+x_{10}x_1$

How many ways can 4 things of type A, 4 things of type B, and 4 things of type C be arranged so no two things of the same type are seated together?

Combinatorics: Creating a password with characters, numbers, and one special character

Grouping of guides and tourists

Problem in polynomials related to permutation of number of solution

System of equations invariant under a permutation.

Possible Passwords Help (combination/permutations)

Find the number of distinct equivalence classes that can be formed out of S

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