Question

Probability of new seating arrangement given following conditions

score 41 · Answer 1 · 2026-04-12 10:26:04

41

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Probability of new seating arrangement given following conditions

Published on 12 Apr 2026 - 10:26

score 41 · Answer 2 · 2026-04-10 23:45:13

41

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Custom License Plates without specific characters

Published on 10 Apr 2026 - 23:45

score 125 · Answer 3 · 2026-04-16 18:05:17

125

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Finding coprime $p,q$ such that $pq=10! $ and $ p<q$

Published on 16 Apr 2026 - 18:05

score 34 · Answer 4 · 2026-04-15 22:44:44

34

Views

For $n\in\Bbb{N}$, count the number of permutations $\pi$ such that $|i-j|\leq 1$ implies that $|\pi(i)-\pi(j)|\leq 2$

Published on 15 Apr 2026 - 22:44

score 46 · Answer 5 · 2026-04-12 11:48:34

46

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What is the average number of objects that are not in their place in permutations of n objects?

Published on 12 Apr 2026 - 11:48

score 97 · Answer 6 · 2026-04-14 04:30:01

97

Views

If you have 9 options and 6 people who choose the 9 options independently, what's the probability of X distinct options being chosen?

Published on 14 Apr 2026 - 4:30

score 4.5k · Answer 7 · 2026-04-16 16:57:34

4.5k

Views

A coin is tossed 7 times and results recorded. How many total possible outcomes are there?

Published on 16 Apr 2026 - 16:57

score 621 · Answer 8 · 2020-05-18 12:00:36

621

Views

Groups or combinations of permutations (i.e. make a pair of pairs) without repeat/using existing

Published on 18 May 2020 - 12:00

score 57 · Answer 9 · 2026-04-17 07:29:35

57

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Let $X=\left \{ f:\mathbb{N} \to \mathbb{N} \;\;\text{sucht that } f(f(x))=x \;\;\;\forall x \in \mathbb{N} \right \}$

Published on 17 Apr 2026 - 7:29

score 398 · Answer 10 · 2026-04-13 16:50:04

398

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In how many different ways can we place $k$ elements in $n$ boxes in which each box has a fixed maximum capacity?

Published on 13 Apr 2026 - 16:50

score 198 · Answer 11 · 2026-03-26 06:07:59

198

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If a deck of cards is divided into 4 hands, what is the probability that the north and east hands have the same number of spades

Published on 26 Mar 2026 - 6:07

score 283 · Answer 12 · 2026-04-16 19:27:39

283

Views

How many ways can the athletes line up?

Published on 16 Apr 2026 - 19:27

score 74 · Answer 13 · 2026-04-14 06:44:29

74

Views

Is there missing information to answer this question!

Published on 14 Apr 2026 - 6:44

score 350 · Answer 14 · 2026-04-11 12:21:39

350

Views

How many ways can the books be lined up?

Published on 11 Apr 2026 - 12:21

score 433 · Answer 15 · 2026-04-16 23:50:04

433

Views

How many ways are there to permute the elements of the set [7] so that an even number is in the first position?

Published on 16 Apr 2026 - 23:50

List Question

Probability of new seating arrangement given following conditions

Custom License Plates without specific characters

Finding coprime $p,q$ such that $pq=10! $ and $ p<q$

For $n\in\Bbb{N}$, count the number of permutations $\pi$ such that $|i-j|\leq 1$ implies that $|\pi(i)-\pi(j)|\leq 2$

What is the average number of objects that are not in their place in permutations of n objects?

If you have 9 options and 6 people who choose the 9 options independently, what's the probability of X distinct options being chosen?

A coin is tossed 7 times and results recorded. How many total possible outcomes are there?

Groups or combinations of permutations (i.e. make a pair of pairs) without repeat/using existing

Let $X=\left \{ f:\mathbb{N} \to \mathbb{N} \;\;\text{sucht that } f(f(x))=x \;\;\;\forall x \in \mathbb{N} \right \}$

In how many different ways can we place $k$ elements in $n$ boxes in which each box has a fixed maximum capacity?

If a deck of cards is divided into 4 hands, what is the probability that the north and east hands have the same number of spades

How many ways can the athletes line up?

Is there missing information to answer this question!

How many ways can the books be lined up?

How many ways are there to permute the elements of the set [7] so that an even number is in the first position?

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