Question

Explanation for Concrete Mathematics 3.38's solution

score 178 · Answer 1 · 2026-04-11 04:25:05

178

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Explanation for Concrete Mathematics 3.38's solution

Published on 11 Apr 2026 - 4:25

score 271 · Answer 2 · 2026-04-16 05:33:51

271

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In how many ways can string $123456$ be rearranged if at least one character needs to move more than one place from its original position?

Published on 16 Apr 2026 - 5:33

score 340 · Answer 3 · 2026-04-13 14:51:59

340

Views

Finding the chances on $n$-th try without replacement

Published on 13 Apr 2026 - 14:51

score 67 · Answer 4 · 2026-03-25 10:55:32

67

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How can I find a short term for those sums?

Published on 25 Mar 2026 - 10:55

score 66 · Answer 5 · 2026-04-14 19:52:22

66

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Unique number from 6 different numbers <= 49 and its inverse

Published on 14 Apr 2026 - 19:52

score 712 · Answer 6 · 2026-04-13 16:28:26

712

Views

How many permutations of $0123456789$ are possible if $0123$, $2345$, $4567$, $6789$ sequences are not allowed?

Published on 13 Apr 2026 - 16:28

score 201 · Answer 7 · 2026-04-17 06:07:14

201

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Calculate the probability that red balls have a majority in at least one of the buckets

Published on 17 Apr 2026 - 6:07

score 165 · Answer 8 · 2026-04-16 01:07:31

165

Views

Probability of hypercube vertices being within the unit n-hypersphere

Published on 16 Apr 2026 - 1:07

score 683 · Answer 9 · 2026-04-17 06:07:13

683

Views

Number of tuples of positive integers that add up to a given integer

Published on 17 Apr 2026 - 6:07

score 292 · Answer 10 · 2026-04-13 00:10:14

292

Views

Online Math Olympiad courses

Published on 13 Apr 2026 - 0:10

score 29 · Answer 11 · 2026-04-13 14:22:33

29

Views

Number of gatherings possible?

Published on 13 Apr 2026 - 14:22

score 290 · Answer 12 · 2026-04-14 05:25:12

290

Views

Burnside lemma application

Published on 14 Apr 2026 - 5:25

score 1k · Answer 13 · 2026-04-15 05:01:06

1k

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How many unlabelled oriented trees with $n$ vertices?

Published on 15 Apr 2026 - 5:01

score 187 · Answer 14 · 2026-04-14 16:36:23

187

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How can the total number of permutations equal the number of permutations with each element in it's original space

Published on 14 Apr 2026 - 16:36

score 114 · Answer 15 · 2026-04-11 15:15:16

114

Views

Proof of a combinatorics identity

Published on 11 Apr 2026 - 15:15

List Question

Explanation for Concrete Mathematics 3.38's solution

In how many ways can string $123456$ be rearranged if at least one character needs to move more than one place from its original position?

Finding the chances on $n$-th try without replacement

How can I find a short term for those sums?

Unique number from 6 different numbers <= 49 and its inverse

How many permutations of $0123456789$ are possible if $0123$, $2345$, $4567$, $6789$ sequences are not allowed?

Calculate the probability that red balls have a majority in at least one of the buckets

Probability of hypercube vertices being within the unit n-hypersphere

Number of tuples of positive integers that add up to a given integer

Online Math Olympiad courses

Number of gatherings possible?

Burnside lemma application

How many unlabelled oriented trees with $n$ vertices?

How can the total number of permutations equal the number of permutations with each element in it's original space

Proof of a combinatorics identity

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