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15
Math.TechQA.Club
2026-03-26 13:19:14
345
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Equivalence of skew-symmetric matrices
Published on
26 Mar 2026 - 13:19
#linear-algebra
#matrices
#permutations
#skew-symmetric-matrices
1.7k
Views
Permutation with repetitions / non-distinguishable objects basics
Published on
12 Apr 2026 - 9:44
#permutations
6.3k
Views
How many different ways can 2 groups of 10 be divided into 10 groups of 2?
Published on
13 Apr 2026 - 13:53
#combinatorics
#statistics
#permutations
2.1k
Views
How many ways to partition a set?
Published on
11 Apr 2026 - 19:53
#combinatorics
#permutations
#set-partition
64
Views
Are combinatorics the most elegant way to determining the search space of a password's character set?
Published on
13 Apr 2026 - 3:07
#combinatorics
#permutations
#combinations
394
Views
Show that $(k!)^2$ divides $(2k+2)!$
Published on
15 Apr 2026 - 6:02
#combinatorics
#elementary-number-theory
#permutations
#combinations
9.7k
Views
Number of words if each word neither begins with G nor ends with S
Published on
16 Apr 2026 - 9:42
#permutations
#combinations
74
Views
In how many ways I can put books on a shelf when only colour matters
Published on
14 Apr 2026 - 5:16
#discrete-mathematics
#permutations
7.3k
Views
How many different ways are there to get a 21 in Black Jack?
Published on
15 Apr 2026 - 17:42
#permutations
#combinations
#card-games
158
Views
Is there a permutation on $\mathbb{N}$ that, if repeated often enough, eventually shuffles the whole set?
Published on
13 Apr 2026 - 8:18
#elementary-set-theory
#permutations
#computability
197
Views
Existence of a prime with some additional properties
Published on
13 Apr 2026 - 0:20
#algorithms
#prime-numbers
#permutations
893
Views
Finding the Total number of permutation using a selective formula
Published on
11 Apr 2026 - 7:34
#probability
#statistics
#permutations
#factorial
2.6k
Views
Transform permutation into another permutation with minimum swaps
Published on
11 Apr 2026 - 23:48
#combinatorics
#permutations
160
Views
Primitive group with regular socle
Published on
22 Apr 2026 - 1:11
#group-theory
#finite-groups
#permutations
96
Views
What are $n$ and $r$ in this question?
Published on
11 Apr 2026 - 13:56
#permutations
#combinations
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