List questions from factorial

Published on 01 Dec 2017 - 3:34

127

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Placing $n$ balls into $n$ boxes but with a hole

Published on 01 Dec 2017 - 9:35

232

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How to simplify $\sum_{k=1}^nk\cdot k!$

Published on 07 Apr 2026 - 23:16

91

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limit of $\frac{c^n}{n!}$

Published on 02 Dec 2017 - 11:38

557

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Why is 0 factorial is equal to 1 ??

Published on 02 Dec 2017 - 19:35

1.8k

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What is $\aleph_0!$?

Published on 02 Apr 2026 - 2:04

88

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How to solve for $x$ in the following equation?

Published on 06 Dec 2017 - 15:15

69

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When is it correct to use $\Gamma(n)$ instead of $n!$ when $n$ is a positive integer?

Published on 08 Dec 2017 - 16:10

31

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all n-tiples $\{a_m\}_1^n \subset\{0,1,2,...,9\} $ such that $\sum_{k=0}^{n} (a_k10^k - a_k! )=0$

Published on 09 Dec 2017 - 21:05

71

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Prove through induction that if $f(x) := \frac{2}{1-x^2}$ then $f^{(n)}(x) = n!(\frac{1}{(1-x)^{n+1}}+\frac{(-1)^n}{(1+x)^{n+1}})$

Published on 12 Dec 2017 - 18:25

96

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Sum divides Factorial

Published on 13 Dec 2017 - 4:43

264

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How to prove this inequality involving factorials?

Published on 13 Dec 2017 - 12:19

202

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Factorials, squares and Bertrand's postulate

Published on 02 Apr 2026 - 5:21

111

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How to find $n! \pmod{p}$ fast

Published on 14 Dec 2017 - 18:21

104

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Manipulation of factorials

Published on 16 Dec 2017 - 21:42

List Question

The product of three ordered variables is $8!$ (Factorial)?

Placing $n$ balls into $n$ boxes but with a hole

How to simplify $\sum_{k=1}^nk\cdot k!$

limit of $\frac{c^n}{n!}$

Why is 0 factorial is equal to 1 ??

What is $\aleph_0!$?

How to solve for $x$ in the following equation?

When is it correct to use $\Gamma(n)$ instead of $n!$ when $n$ is a positive integer?

all n-tiples $\{a_m\}_1^n \subset\{0,1,2,...,9\} $ such that $\sum_{k=0}^{n} (a_k10^k - a_k! )=0$

Prove through induction that if $f(x) := \frac{2}{1-x^2}$ then $f^{(n)}(x) = n!(\frac{1}{(1-x)^{n+1}}+\frac{(-1)^n}{(1+x)^{n+1}})$

Sum divides Factorial

How to prove this inequality involving factorials?

Factorials, squares and Bertrand's postulate

How to find $n! \pmod{p}$ fast

Manipulation of factorials

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