Question

Combination of N elements when number of remaining elements decreases by some factor

score 28 · Answer 1 · 2023-12-13 17:28:31

28

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Combination of N elements when number of remaining elements decreases by some factor

Published on 13 Dec 2023 - 17:28

score 119 · Answer 2 · 2026-03-28 13:13:52

119

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Counting argument for an alternating sum identity $\sum_{b=0}^{\binom{a}{c}}(-1)^{b+1}f(a,b,c)=(-1)^{a+c}\binom{a-1}{c-1}$

Published on 28 Mar 2026 - 13:13

score 102 · Answer 3 · 2023-12-30 14:21:33

102

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Question about the proof of the Inclusion–exclusion principle (In this book, the author calls it the Poincare's formula)

Published on 30 Dec 2023 - 14:21

score 88 · Answer 4 · 2024-01-07 14:22:35

88

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Arrange INDEPENDENCE such that no vowels occur together.

Published on 07 Jan 2024 - 14:22

score 64 · Answer 5 · 2026-03-29 07:29:06

64

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Distribution of the size of the union of repeated random draws

Published on 29 Mar 2026 - 7:29

score 57 · Answer 6 · 2024-01-30 16:39:40

57

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What’s the chance that at least one room has students all from the same grade level?

Published on 30 Jan 2024 - 16:39

score 82 · Answer 7 · 2024-02-08 03:45:52

82

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Feasibility of Meeting Patterns in Combinatorial Lunch Gatherings

Published on 08 Feb 2024 - 3:45

score 98 · Answer 8 · 2024-02-10 14:22:01

98

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Number of words with $3n$ letters where no $3$ consecutive letters are the same

Published on 10 Feb 2024 - 14:22

score 54 · Answer 9 · 2024-02-20 22:14:31

54

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In how many ways can 25 students form 5 groups of 5 such that no group consists of students with the same year of birth?

Published on 20 Feb 2024 - 22:14

score 31 · Answer 10 · 2024-03-10 21:38:39

31

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Probability of system working using conditional probabilities

Published on 10 Mar 2024 - 21:38

score 33 · Answer 11 · 2024-03-16 13:09:57

33

Views

a probability question on ball choosing from an urn

Published on 16 Mar 2024 - 13:09

score 44 · Answer 12 · 2026-03-26 21:25:39

44

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No adjacent empty boxes with PIE

Published on 26 Mar 2026 - 21:25

score 48 · Answer 13 · 2024-03-19 22:45:15

48

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Understanding the Inclusion/Exclusion Principle

Published on 19 Mar 2024 - 22:45

score 54 · Answer 14 · 2024-03-25 16:15:59

54

Views

Is my solution to count the integer solutions for a linear inequality with bounds correct?

Published on 25 Mar 2024 - 16:15

score 41 · Answer 15 · 2024-03-27 17:38:30

41

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Counting the amount of injective functions with restriction

Published on 27 Mar 2024 - 17:38

List Question

Combination of N elements when number of remaining elements decreases by some factor

Counting argument for an alternating sum identity $\sum_{b=0}^{\binom{a}{c}}(-1)^{b+1}f(a,b,c)=(-1)^{a+c}\binom{a-1}{c-1}$

Question about the proof of the Inclusion–exclusion principle (In this book, the author calls it the Poincare's formula)

Arrange INDEPENDENCE such that no vowels occur together.

Distribution of the size of the union of repeated random draws

What’s the chance that at least one room has students all from the same grade level?

Feasibility of Meeting Patterns in Combinatorial Lunch Gatherings

Number of words with $3n$ letters where no $3$ consecutive letters are the same

In how many ways can 25 students form 5 groups of 5 such that no group consists of students with the same year of birth?

Probability of system working using conditional probabilities

a probability question on ball choosing from an urn

No adjacent empty boxes with PIE

Understanding the Inclusion/Exclusion Principle

Is my solution to count the integer solutions for a linear inequality with bounds correct?

Counting the amount of injective functions with restriction

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