Question

simulate coin tossing by die tossing

score 120 · Answer 1 · 2026-03-30 08:02:20

120

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simulate coin tossing by die tossing

Published on 30 Mar 2026 - 8:02

score 101 · Answer 2 · 2026-03-23 09:38:38

101

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Show that $A+B$ contains at least $m+n-1$ elements.

Published on 23 Mar 2026 - 9:38

score 827 · Answer 3 · 2026-03-25 06:00:14

827

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Prove the following by two different methods, one combinatorial and one algebraic

Published on 25 Mar 2026 - 6:00

score 296 · Answer 4 · 2026-03-26 22:07:44

296

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Problem related to Combinatorics

Published on 26 Mar 2026 - 22:07

score 1.1k · Answer 5 · 2026-03-25 09:25:07

1.1k

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Select Candidates based on votes count permutations

Published on 25 Mar 2026 - 9:25

score 418 · Answer 6 · 2026-03-27 13:33:20

418

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Identity involving binomial coefficients

Published on 27 Mar 2026 - 13:33

score 155 · Answer 7 · 2026-03-25 06:22:12

155

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Does having closed forms of two generating functions guarantee that one can find the closed form of their term-by-term product?

Published on 25 Mar 2026 - 6:22

score 195 · Answer 8 · 2026-03-26 03:13:27

195

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Find the number of ways to arrange the numbers $\{1,2,...,n\}$ in a row so that for all number $x$:

Published on 26 Mar 2026 - 3:13

score 637 · Answer 9 · 2026-04-01 14:23:51

637

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What is the probability that at least 1 passenger will get off the bus at each stop?

Published on 01 Apr 2026 - 14:23

score 859 · Answer 10 · 2026-04-01 10:08:42

859

Views

Bijection between sets and multisets

Published on 01 Apr 2026 - 10:08

score 278 · Answer 11 · 2026-03-20 04:25:19

To show that $\sum_{x \in \lambda}(h(x)^2 - c(x)^2)=|\lambda|^2$, $h(x)$ is hook-length & $c(x)$ content of $x$, a block in the diagram of $\lambda$

score 526 · Answer 12 · 2026-03-26 21:45:35

526

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Finding partition with equal sum

Published on 26 Mar 2026 - 21:45

score 43 · Answer 13 · 2026-03-25 22:06:36

43

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Choosing the optimal nonempty intersection from a list of pairs of shapes

Published on 25 Mar 2026 - 22:06

score 426 · Answer 14 · 2026-03-25 01:17:35

426

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How many ways can the digits $2,3,4,5,6$ be arranged to get a number divisible by 11

Published on 25 Mar 2026 - 1:17

score 60 · Answer 15 · 2026-04-01 11:16:10

60

Views

Partition of an $n$-element set such that the smallest component has at least $k$ elements?

Published on 01 Apr 2026 - 11:16

List Question

simulate coin tossing by die tossing

Show that $A+B$ contains at least $m+n-1$ elements.

Prove the following by two different methods, one combinatorial and one algebraic

Problem related to Combinatorics

Select Candidates based on votes count permutations

Identity involving binomial coefficients

Does having closed forms of two generating functions guarantee that one can find the closed form of their term-by-term product?

Find the number of ways to arrange the numbers $\{1,2,...,n\}$ in a row so that for all number $x$:

What is the probability that at least 1 passenger will get off the bus at each stop?

Bijection between sets and multisets

To show that $\sum_{x \in \lambda}(h(x)^2 - c(x)^2)=|\lambda|^2$, $h(x)$ is hook-length & $c(x)$ content of $x$, a block in the diagram of $\lambda$

Finding partition with equal sum

Choosing the optimal nonempty intersection from a list of pairs of shapes

How many ways can the digits $2,3,4,5,6$ be arranged to get a number divisible by 11

Partition of an $n$-element set such that the smallest component has at least $k$ elements?

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