Question

Number of subsets of $A=\{1 ,2 ,3,...,8,9\}$ such that the maximum is in $B = \{1,3,5,7,9 \}$

score 1.4k · Answer 1 · 2026-03-25 22:26:56

1.4k

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Number of subsets of $A=\{1 ,2 ,3,...,8,9\}$ such that the maximum is in $B = \{1,3,5,7,9 \}$

Published on 25 Mar 2026 - 22:26

score 151 · Answer 2 · 2026-03-23 04:35:42

151

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How many bitstrings of length $n = 10$ contain at least $k = 3$ consecutive 1’s?

Published on 23 Mar 2026 - 4:35

score 722 · Answer 3 · 2026-03-25 22:26:06

722

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Probability such that the average of those 22 numbers is the smallest possible average?

Published on 25 Mar 2026 - 22:26

score 320 · Answer 4 · 2026-03-25 23:39:21

320

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Irreducible decomposition of standard complex representation of an alternating group

Published on 25 Mar 2026 - 23:39

score 117 · Answer 5 · 2026-03-25 17:42:00

117

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Property of generating function involving $I_n(k)$, number of permutations in a set of size $n$ that have $k$ inversions

Published on 25 Mar 2026 - 17:42

score 34 · Answer 6 · 2018-03-31 16:50:02

34

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Probability of having 3 king cards separated in a hand of 5

Published on 31 Mar 2018 - 16:50

score 238 · Answer 7 · 2026-03-26 04:53:31

238

Views

Distribute $4$ people into $3$ rooms when each can contain any number of people

Published on 26 Mar 2026 - 4:53

score 959 · Answer 8 · 2018-03-31 20:04:55

959

Views

Possible combinations of Canadian postal codes with letters in alphabetical order?

Published on 31 Mar 2018 - 20:04

score 257 · Answer 9 · 2026-03-24 23:45:53

257

Views

Loring Tu's "An Introduction to Manifolds", Proposition 3.12

Published on 24 Mar 2026 - 23:45

score 302 · Answer 10 · 2018-04-01 12:57:58

302

Views

How many sequences can be formed with a given set of characters?

Published on 01 Apr 2018 - 12:57

score 51 · Answer 11 · 2018-04-01 13:17:47

51

Views

Give an example of a permutation based on $\Bbb S_{10}$ and its order.

Published on 01 Apr 2018 - 13:17

score 43 · Answer 12 · 2018-04-01 18:03:55

43

Views

What is the formula for this probability problem?

Published on 01 Apr 2018 - 18:03

score 158 · Answer 13 · 2018-04-01 19:01:12

158

Views

Independence number of a graph based on $k$-permutations of $n$

Published on 01 Apr 2018 - 19:01

score 429 · Answer 14 · 2018-04-01 20:25:38

Calculating # of letter permutations that can be rearranged without having letters that are repeated adjacent within the sequence of letters

score 57 · Answer 15 · 2018-04-02 03:23:07

57

Views

cycles in a group of permutations

Published on 02 Apr 2018 - 3:23

List Question

Number of subsets of $A=\{1 ,2 ,3,...,8,9\}$ such that the maximum is in $B = \{1,3,5,7,9 \}$

How many bitstrings of length $n = 10$ contain at least $k = 3$ consecutive 1’s?

Probability such that the average of those 22 numbers is the smallest possible average?

Irreducible decomposition of standard complex representation of an alternating group

Property of generating function involving $I_n(k)$, number of permutations in a set of size $n$ that have $k$ inversions

Probability of having 3 king cards separated in a hand of 5

Distribute $4$ people into $3$ rooms when each can contain any number of people

Possible combinations of Canadian postal codes with letters in alphabetical order?

Loring Tu's "An Introduction to Manifolds", Proposition 3.12

How many sequences can be formed with a given set of characters?

Give an example of a permutation based on $\Bbb S_{10}$ and its order.

What is the formula for this probability problem?

Independence number of a graph based on $k$-permutations of $n$

Calculating # of letter permutations that can be rearranged without having letters that are repeated adjacent within the sequence of letters

cycles in a group of permutations

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