List questions from factorial

Published on 02 Feb 2011 - 6:17

19k

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Prove $0! = 1$ from first principles

Published on 24 Feb 2026 - 3:25

1.5k

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Arrangement of six triangles in a hexagon

Published on 10 Feb 2011 - 16:24

2.7k

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Which is bigger: $9^{9^{9^{9^{9^{9^{9^{9^{9^{9}}}}}}}}}$ or $9!!!!!!!!!$?

Published on 26 Mar 2026 - 2:55

6.3k

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How best to explain the $\sqrt{2\pi n}$ term in Stirling's?

Published on 26 Feb 2011 - 6:29

1.2k

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Combination vs Permutation?

Published on 01 Mar 2011 - 6:56

619

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Use of algebra and factorials for a question related to proof by induction

Published on 04 Mar 2011 - 0:08

1.8k

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Repeated Factorials and Repeated Square Rooting

Published on 04 Mar 2011 - 7:23

31.8k

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Why does 0! = 1?

Published on 06 Mar 2011 - 18:57

8.4k

Views

Prove that $\gcd(n!+1,(n+1)!+1)=1$

Published on 06 Apr 2026 - 23:22

619

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Factorial of 0 - a convenience?

Published on 08 Mar 2011 - 17:39

508

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Given $n! = c$, how to find $n$?

Published on 17 Mar 2011 - 14:39

14.4k

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Finding the limit of $\frac {n}{\sqrt[n]{n!}}$

Published on 22 Mar 2011 - 11:54

6.6k

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$n!$ is never a perfect square if $n\geq2$. Is there a proof of this that doesn't use Chebyshev's theorem?

Published on 09 Apr 2011 - 20:08

1.3k

Views

What is the theoretical upper bound of factorion numbers?

Published on 28 Apr 2011 - 23:22

List Question

How many consecutive composite integers follow k!+1?

Prove $0! = 1$ from first principles

Arrangement of six triangles in a hexagon

Which is bigger: $9^{9^{9^{9^{9^{9^{9^{9^{9^{9}}}}}}}}}$ or $9!!!!!!!!!$?

How best to explain the $\sqrt{2\pi n}$ term in Stirling's?

Combination vs Permutation?

Use of algebra and factorials for a question related to proof by induction

Repeated Factorials and Repeated Square Rooting

Why does 0! = 1?

Prove that $\gcd(n!+1,(n+1)!+1)=1$

Factorial of 0 - a convenience?

Given $n! = c$, how to find $n$?

Finding the limit of $\frac {n}{\sqrt[n]{n!}}$

$n!$ is never a perfect square if $n\geq2$. Is there a proof of this that doesn't use Chebyshev's theorem?

What is the theoretical upper bound of factorion numbers?

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