List questions from derangements

Published on 14 Jun 2016 - 17:12

701

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Derangements with even/odd cycles

Published on 31 Mar 2013 - 13:03

7.9k

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Why is the Derangement Probability so Close to $\frac{1}{e}$?

Published on 22 May 2013 - 18:21

128

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A question on probability and simple arrangement

Published on 18 Jul 2013 - 6:21

583

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For which $n$ are there $11\text{,}660$ derangements fixing the first five elements?

Published on 30 Jul 2013 - 5:56

1.7k

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5 cars, 4 parking places. Derangements and permutations with fixed points

Published on 02 Aug 2013 - 14:52

1.8k

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Derangement of $n$ elements

Published on 27 Sep 2013 - 15:48

645

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Finding a combinatorial proof of this identity: $n!=\sum_{i=0}^n \binom{n}{n-i}D_i$

Published on 28 Oct 2013 - 18:01

1.7k

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Derangements of Permutations

Published on 02 Dec 2013 - 8:17

655

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Problem on the number of derangements

Published on 11 Dec 2013 - 23:13

44.3k

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What is the probability that no letter is in its proper envelope?

Published on 19 Jan 2014 - 6:50

343

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Double Derangement Problem

Published on 06 Mar 2014 - 13:44

3.2k

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Prove: Number of derangement is odd if and only if number of items is even .

Published on 09 Mar 2014 - 9:28

38

Views

Derangement with some variable indentical

Published on 11 May 2017 - 7:36

438

Views

Derangement without replacement

Published on 31 Jul 2017 - 10:00

List Question

Derangement combination calculation

Derangements with even/odd cycles

Why is the Derangement Probability so Close to $\frac{1}{e}$?

A question on probability and simple arrangement

For which $n$ are there $11\text{,}660$ derangements fixing the first five elements?

5 cars, 4 parking places. Derangements and permutations with fixed points

Derangement of $n$ elements

Finding a combinatorial proof of this identity: $n!=\sum_{i=0}^n \binom{n}{n-i}D_i$

Derangements of Permutations

Problem on the number of derangements

What is the probability that no letter is in its proper envelope?

Double Derangement Problem

Prove: Number of derangement is odd if and only if number of items is even .

Derangement with some variable indentical

Derangement without replacement

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