List questions from binomial-coefficients

Published on 23 Mar 2026 - 10:52

58

Views

On variations of Erdős squarefree conjecture: presentation and a question as a simple case

Published on 25 Mar 2026 - 6:03

205

Views

On variations of Erdős squarefree conjecture: a conjecture involving the prime-counting function

Published on 25 Mar 2026 - 4:40

64

Views

Is there an easy criterion when $\binom{n}{m}$ is divisible by $q^2$?

Published on 25 Mar 2026 - 11:26

1.3k

Views

An urn contains n red balls, n white, n black. What is the probability of not getting all colors?

Published on 22 Mar 2026 - 21:16

246

Views

Binomial Identity problem

Published on 23 Mar 2026 - 5:05

209

Views

Pascal's triangle.

Published on 23 Mar 2026 - 5:42

461

Views

Partition Adjacency Matrix of Graph into Non-Overlapping Triangles

Published on 25 Mar 2026 - 20:35

1k

Views

Using a generation function

Published on 09 Mar 2026 - 4:43

93

Views

An interesting extension of a combinatorics problem

Published on 25 Mar 2026 - 16:00

1.5k

Views

Binomial Expansion of $x^n$ coefficient

Published on 22 Mar 2026 - 16:54

58

Views

Closed form expression for $\sum\limits_{k=0}^{n}{n+k \choose k}{n+1 \choose k+1}X^{n-k}Y^{k}$?

Published on 23 Mar 2026 - 4:12

197

Views

Help understand second step in proof of ${n\choose m-1}+{n\choose m}={n+1\choose m}$

Published on 23 Mar 2026 - 4:35

132

Views

Binomial coefficients $\binom{n}{b} \pmod{n}$, $n > b$, $n$ odd, $n,b$ positive integers, AKS test

Published on 25 Mar 2026 - 22:03

75

Views

How to calculate this sum with binomials?

Published on 23 Mar 2026 - 14:02

List Question

Establishing properties of a complicated finite sum

On variations of Erdős squarefree conjecture: presentation and a question as a simple case

On variations of Erdős squarefree conjecture: a conjecture involving the prime-counting function

Is there an easy criterion when $\binom{n}{m}$ is divisible by $q^2$?

An urn contains n red balls, n white, n black. What is the probability of not getting all colors?

Binomial Identity problem

Pascal's triangle.

Partition Adjacency Matrix of Graph into Non-Overlapping Triangles

Using a generation function

An interesting extension of a combinatorics problem

Binomial Expansion of $x^n$ coefficient

Closed form expression for $\sum\limits_{k=0}^{n}{n+k \choose k}{n+1 \choose k+1}X^{n-k}Y^{k}$?

Help understand second step in proof of ${n\choose m-1}+{n\choose m}={n+1\choose m}$

Binomial coefficients $\binom{n}{b} \pmod{n}$, $n > b$, $n$ odd, $n,b$ positive integers, AKS test

How to calculate this sum with binomials?

Trending Questions

Popular # Hahtags

Popular Questions