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A problem involving a pack of $27$ distinct cards.

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#combinatorics #permutations #contest-math #combinations
398
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How many different even 4-digit numbers can be created if digits 0-6 can be used and the first digit is nonzero. Repetition is not allowed.

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#combinatorics #permutations
116
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Seeking a general example of $f \in S_G$ but $f \notin {\rm Aut}(G)$

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#abstract-algebra #group-theory #permutations #group-isomorphism #automorphism-group
1.3k
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Number of ways of coloring a K by K grid of cells with N distinct colors

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#combinatorics #permutations #coloring
84
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Permutation with largest odd order

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#group-theory #number-theory #optimization #permutations #symmetric-groups
194
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Normal subgroups of signed symmetric groups

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#group-theory #permutations #symmetric-groups #normal-subgroups
220
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The ways to describe the disorder (inversions, graph)

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#statistics #graph-theory #permutations
26
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How do I calculate the number of ways I can make up number a from the numbers b and c, with n additions of b and/or c?

Published on
#permutations
115
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Even and odd permutations of 123

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#permutations
134
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Number of permutations with a given property

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#combinatorics #discrete-mathematics #permutations #combinatorial-proofs
555
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Permutation 6 letter password lowercase and digits?

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#combinatorics #permutations
22
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Finding all the required PINS

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#combinatorics #permutations
90
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Just checking if an answer is correct permutations

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#permutations #combinations
148
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No. of points on tetrahedron

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#permutations #combinations #3d
271
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Proof - Inverse Permutation

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#proof-writing #permutations #permutation-cycles

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