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Permutation and combinations using chairs?

score 2.1k · Answer 1 · 2026-03-22 06:27:45

2.1k

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Permutation and combinations using chairs?

Published on 22 Mar 2026 - 6:27

score 364 · Answer 2 · 2018-06-04 08:18:08

364

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Gacha / lootbox probability when there are multiple sets of odds

Published on 04 Jun 2018 - 8:18

score 339 · Answer 3 · 2018-06-04 13:00:50

339

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Visualizing combinations with repetitions allowed.

Published on 04 Jun 2018 - 13:00

score 229 · Answer 4 · 2026-03-26 12:53:43

229

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How to prove the binomial identity $\binom{n}{r - 1} + 2\binom{n}{r} + \binom{n}{r + 1} = \binom{n + 2}{r + 1}$?

Published on 26 Mar 2026 - 12:53

score 402 · Answer 5 · 2018-06-04 21:30:45

402

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Combination of 5 cards from a 32 cards deck.

Published on 04 Jun 2018 - 21:30

score 218 · Answer 6 · 2018-06-04 22:16:02

218

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Number of ways to select N sets out of M sets, plus 1 item from each set

Published on 04 Jun 2018 - 22:16

score 11.4k · Answer 7 · 2018-06-05 10:44:36

11.4k

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In how many ways can $3$ boys and $2$ girls be selected from a group of $6$ boys and $4$ girls?

Published on 05 Jun 2018 - 10:44

score 64 · Answer 8 · 2018-06-05 20:36:55

64

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Can multinomial theorem be used in the expression?

Published on 05 Jun 2018 - 20:36

score 795 · Answer 9 · 2018-06-06 03:59:49

795

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Probability of selecting a set of three numbers from S={1,2,3,..,20}

Published on 06 Jun 2018 - 3:59

score 119 · Answer 10 · 2018-06-06 12:17:10

119

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How many functions are there from [9] to [7] if every image in the codomain has 3 arguments in the domain?

Published on 06 Jun 2018 - 12:17

score 1.2k · Answer 11 · 2018-06-06 18:40:19

A student must pick 5 classes from 12 courses, if he must have at least one WH class or USH class, how many different choices does he have?

score 248 · Answer 12 · 2026-03-26 13:02:22

248

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Numbers of ways to select 4 integers from {1, 2 , 3 , ..., 24}

Published on 26 Mar 2026 - 13:02

score 9.1k · Answer 13 · 2026-03-25 07:21:57

9.1k

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The pigeonhole principle and a professor who knows $9$ jokes and tells $3$ jokes per lecture

Published on 25 Mar 2026 - 7:21

score 31 · Answer 14 · 2018-06-07 14:35:51

31

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Calculate the number of elements using the total of combinations

Published on 07 Jun 2018 - 14:35

score 37 · Answer 15 · 2018-06-08 03:56:20

37

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Simple question on combinations

Published on 08 Jun 2018 - 3:56

List Question

Permutation and combinations using chairs?

Gacha / lootbox probability when there are multiple sets of odds

Visualizing combinations with repetitions allowed.

How to prove the binomial identity $\binom{n}{r - 1} + 2\binom{n}{r} + \binom{n}{r + 1} = \binom{n + 2}{r + 1}$?

Combination of 5 cards from a 32 cards deck.

Number of ways to select N sets out of M sets, plus 1 item from each set

In how many ways can $3$ boys and $2$ girls be selected from a group of $6$ boys and $4$ girls?

Can multinomial theorem be used in the expression?

Probability of selecting a set of three numbers from S={1,2,3,..,20}

How many functions are there from [9] to [7] if every image in the codomain has 3 arguments in the domain?

A student must pick 5 classes from 12 courses, if he must have at least one WH class or USH class, how many different choices does he have?

Numbers of ways to select 4 integers from {1, 2 , 3 , ..., 24}

The pigeonhole principle and a professor who knows $9$ jokes and tells $3$ jokes per lecture

Calculate the number of elements using the total of combinations

Simple question on combinations

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