Question

Calculate the sum $\sum_{k=0}^K (\frac{a}{b})^k \cdot k!$

score 80 · Answer 1 · 2018-05-25 17:48:40

80

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Calculate the sum $\sum_{k=0}^K (\frac{a}{b})^k \cdot k!$

Published on 25 May 2018 - 17:48

score 116 · Answer 2 · 2018-05-26 19:43:05

116

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Manipulating a factorial equation

Published on 26 May 2018 - 19:43

score 98 · Answer 3 · 2018-05-27 10:39:58

98

Views

Proving : For all integers $n\ge 2$ , there exists prime $p$ such that $p\mid n!$ but $p^2$ does not divide $n!$

Published on 27 May 2018 - 10:39

score 553 · Answer 4 · 2026-03-25 01:22:27

553

Views

How is $ \sum [(2/(n-1)!) + (1/n!)] = 2e + e - 1$?

Published on 25 Mar 2026 - 1:22

score 48 · Answer 5 · 2026-03-25 10:58:51

48

Views

How to turn a while loop searching for an element in a set into a recursive function

Published on 25 Mar 2026 - 10:58

score 38 · Answer 6 · 2018-05-28 10:41:32

38

Views

How to solve summation (t+i)!/i! where i is from 1 to n.

Published on 28 May 2018 - 10:41

score 93 · Answer 7 · 2018-05-29 05:39:17

93

Views

How to evaluate $ \sum_{x=1}^{N} \frac{(T+x)!}{x!} $?

Published on 29 May 2018 - 5:39

score 443 · Answer 8 · 2018-05-30 15:12:40

443

Views

Factorial to Permutation; (n+3)! = 720*n!

Published on 30 May 2018 - 15:12

score 141 · Answer 9 · 2018-05-31 10:35:25

141

Views

Composite factorial

Published on 31 May 2018 - 10:35

score 398 · Answer 10 · 2026-03-24 23:55:11

398

Views

Mathematically calculate the time complexity of all permutations of a string

Published on 24 Mar 2026 - 23:55

score 730 · Answer 11 · 2018-06-01 12:08:28

730

Views

Approximating $N!$ as $N^N$

Published on 01 Jun 2018 - 12:08

score 388 · Answer 12 · 2018-06-01 20:47:12

388

Views

Tilde notation of $\sum_{i=0}^n \frac{n!}{(n-i)!}$

Published on 01 Jun 2018 - 20:47

score 54 · Answer 13 · 2018-06-03 18:37:33

54

Views

Probability of Two Different and Specific Dice Rolls (2-12) in 3 chances. EX: a 7 and a 6

Published on 03 Jun 2018 - 18:37

score 117 · Answer 14 · 2026-03-25 03:01:21

117

Views

How do I solve $\frac{(n+2)!-n!}{5!} = 330$?

Published on 25 Mar 2026 - 3:01

score 50 · Answer 15 · 2018-06-05 21:25:37

50

Views

Upper bound on $f(x)= \frac{\lfloor x\rfloor!}{\lfloor x+h\rfloor!} 2^{\lfloor x+h\rfloor!-\lfloor x\rfloor!}$

Published on 05 Jun 2018 - 21:25

List Question

Calculate the sum $\sum_{k=0}^K (\frac{a}{b})^k \cdot k!$

Manipulating a factorial equation

Proving : For all integers $n\ge 2$ , there exists prime $p$ such that $p\mid n!$ but $p^2$ does not divide $n!$

How is $ \sum [(2/(n-1)!) + (1/n!)] = 2e + e - 1$?

How to turn a while loop searching for an element in a set into a recursive function

How to solve summation (t+i)!/i! where i is from 1 to n.

How to evaluate $ \sum_{x=1}^{N} \frac{(T+x)!}{x!} $?

Factorial to Permutation; (n+3)! = 720*n!

Composite factorial

Mathematically calculate the time complexity of all permutations of a string

Approximating $N!$ as $N^N$

Tilde notation of $\sum_{i=0}^n \frac{n!}{(n-i)!}$

Probability of Two Different and Specific Dice Rolls (2-12) in 3 chances. EX: a 7 and a 6

How do I solve $\frac{(n+2)!-n!}{5!} = 330$?

Upper bound on $f(x)= \frac{\lfloor x\rfloor!}{\lfloor x+h\rfloor!} 2^{\lfloor x+h\rfloor!-\lfloor x\rfloor!}$

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