Question

There exists a permutation $(A_1, \ldots , A_n)$ of the vertices $V =\{1,\ldots,n\}$ such that for all $i\in\{1,\ldots,n−1\}$, $(A_i,A_{i+1})\in E$.

score 161 · Answer 1 · 2026-05-10 17:02:42

161

Views

There exists a permutation $(A_1, \ldots , A_n)$ of the vertices $V =\{1,\ldots,n\}$ such that for all $i\in\{1,\ldots,n−1\}$, $(A_i,A_{i+1})\in E$.

Published on 10 May 2026 - 17:02

score 65 · Answer 2 · 2026-04-14 01:02:35

You are given K different boxes and N different balls? In how many ways can one distribute the balls so that no box is empty?

score 49 · Answer 3 · 2026-05-10 17:01:08

49

Views

Upper bound for certain number of colorings of $(2k,k^2)$-graph $G$

Published on 10 May 2026 - 17:01

score 111 · Answer 4 · 2026-04-12 23:34:09

111

Views

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score 43 · Answer 5 · 2026-04-10 13:11:40

43

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score 29 · Answer 6 · 2026-04-12 05:00:28

29

Views

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score 317 · Answer 7 · 2026-04-10 20:46:01

317

Views

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score 382 · Answer 8 · 2026-05-11 07:46:35

382

Views

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score 129 · Answer 9 · 2026-05-10 17:57:21

129

Views

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Published on 10 May 2026 - 17:57

score 89 · Answer 10 · 2026-05-15 23:35:49

89

Views

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Published on 15 May 2026 - 23:35

score 951 · Answer 11 · 2026-04-15 17:05:44

951

Views

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Published on 15 Apr 2026 - 17:05

score 36 · Answer 12 · 2026-05-15 19:05:50

36

Views

How to show that $\frac{4^n}{n^{3/2}\sqrt \pi}$ could not be expressed as $\sum_i^m p_i(n)\lambda_i^n$

Published on 15 May 2026 - 19:05

score 395 · Answer 13 · 2026-04-15 23:05:53

395

Views

Number of ways of distributing 6 objects to 6 persons

Published on 15 Apr 2026 - 23:05

score 70 · Answer 14 · 2026-04-12 19:28:57

70

Views

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Published on 12 Apr 2026 - 19:28

score 1k · Answer 15 · 2026-04-15 22:51:05

1k

Views

Given $5$ white balls, $8$ green balls and $7$ red balls. Find the probability of drawing a white ball then a green one.

Published on 15 Apr 2026 - 22:51

List Question

There exists a permutation $(A_1, \ldots , A_n)$ of the vertices $V =\{1,\ldots,n\}$ such that for all $i\in\{1,\ldots,n−1\}$, $(A_i,A_{i+1})\in E$.

You are given K different boxes and N different balls? In how many ways can one distribute the balls so that no box is empty?

Upper bound for certain number of colorings of $(2k,k^2)$-graph $G$

An Inequality Involved Exponentials and Binomial Coefficients

Finding a Solution to Inequalities

Closed form for $q_k(0,0)$ from recurrence

Necklace combinatorics problem

Inclusion Exclusion Principle with mixed lower and upper bounds

A problem on Catalan numbers

Number of integral solutions $x_1 + x_2 + x_3 = 10$

Number of increasing sequences alternating between odd and even involving only integers from the set $[1, 2, 3, ..., n]$

How to show that $\frac{4^n}{n^{3/2}\sqrt \pi}$ could not be expressed as $\sum_i^m p_i(n)\lambda_i^n$

Number of ways of distributing 6 objects to 6 persons

Weird Combination question a friend gave me

Given $5$ white balls, $8$ green balls and $7$ red balls. Find the probability of drawing a white ball then a green one.

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