List questions from inclusion-exclusion

Published on 15 Jan 2019 - 19:04

119

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PIE — # of students taking Spanish

Published on 18 Jan 2019 - 15:32

147

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Number of ways for getting sum equal to s using inclusion-exclusion

Published on 25 Mar 2026 - 14:23

219

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Counting number of rearrangements in which no person has the same right neighbor

Published on 23 Jan 2019 - 6:34

145

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Inclusion-Exclusion Problem - derangement

Published on 25 Jan 2019 - 8:09

278

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Number of permutation of $\{ 1, 2 \dots 2n\}$ with even fixpoints and relating this to derangements.

Published on 25 Jan 2019 - 20:20

144

Views

Number of ways to arrange word 'KBCKBCKBC'

Published on 26 Jan 2019 - 18:08

4.3k

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Probability Inclusion-Exclusion With 3 Events

Published on 26 Jan 2019 - 21:22

275

Views

Inclusion-Exclusion Number of Sets

Published on 05 Feb 2019 - 5:49

154

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4 couples and 4 single people seated at 3 round tables

Published on 06 Feb 2019 - 20:29

42

Views

Selecting conditional states depending on previous states

Published on 10 Feb 2019 - 9:52

61

Views

Is my proof valid? Let $\{A_i\}_{i=0}^{i=n}$ a series of events such that $\forall i$ $P(A_i)=1$. Show that $\bigcap\limits_{0 \leq i \leq n}A_i=1$.

Published on 13 Feb 2019 - 7:18

187

Views

Calculate the expected value of the number of different digits

Published on 15 Feb 2019 - 3:00

178

Views

What is a k-wise intersection?

Published on 15 Feb 2019 - 16:07

1.9k

Views

How many numbers from 0 to 99999 contain the digits 2, 5 and 8?

Published on 15 Feb 2019 - 22:38

List Question

Counting with Principle of inclusion-exclusion

PIE — # of students taking Spanish

Number of ways for getting sum equal to s using inclusion-exclusion

Counting number of rearrangements in which no person has the same right neighbor

Inclusion-Exclusion Problem - derangement

Number of permutation of $\{ 1, 2 \dots 2n\}$ with even fixpoints and relating this to derangements.

Number of ways to arrange word 'KBCKBCKBC'

Probability Inclusion-Exclusion With 3 Events

Inclusion-Exclusion Number of Sets

4 couples and 4 single people seated at 3 round tables

Selecting conditional states depending on previous states

Is my proof valid? Let $\{A_i\}_{i=0}^{i=n}$ a series of events such that $\forall i$ $P(A_i)=1$. Show that $\bigcap\limits_{0 \leq i \leq n}A_i=1$.

Calculate the expected value of the number of different digits

What is a k-wise intersection?

How many numbers from 0 to 99999 contain the digits 2, 5 and 8?

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