Question

Why is the number of ways of choosing $0$ items from $n$ items $1$?

score 15.4k · Answer 1 · 2026-04-15 07:28:51

15.4k

Views

Why is the number of ways of choosing $0$ items from $n$ items $1$?

Published on 15 Apr 2026 - 7:28

score 31 · Answer 2 · 2026-04-16 04:24:44

31

Views

fibonacci seq. in an array of size n of 2 states {a,b} where no 2 a's can be congruent

Published on 16 Apr 2026 - 4:24

score 38 · Answer 3 · 2026-04-15 23:14:54

38

Views

Probability of drawing hearts 2 after hearts 3

Published on 15 Apr 2026 - 23:14

score 237 · Answer 4 · 2026-04-12 09:03:29

237

Views

Combinatorics permutation problem

Published on 12 Apr 2026 - 9:03

score 47 · Answer 5 · 2026-04-14 10:03:56

47

Views

Number of words with using 2 letters independent to cycle shift

Published on 14 Apr 2026 - 10:03

score 208 · Answer 6 · 2026-04-16 10:30:41

208

Views

Odds of specific outcome when drawing names

Published on 16 Apr 2026 - 10:30

score 19 · Answer 7 · 2026-04-12 04:08:12

19

Views

Maximum sum of blocks of a Steiner Quadruple Systems of order 22

Published on 12 Apr 2026 - 4:08

score 74 · Answer 8 · 2026-05-10 17:16:19

74

Views

Stirling Numbers of second kind defined in terms of coefficients

Published on 10 May 2026 - 17:16

score 98 · Answer 9 · 2026-04-17 00:30:16

98

Views

Directed, planar graph and special type of 2-colorability.

Published on 17 Apr 2026 - 0:30

score 193 · Answer 10 · 2026-05-10 22:02:54

193

Views

Number of compositions of a natural number $n \in \mathbb{N}$ with at least two parts.

Published on 10 May 2026 - 22:02

score 38 · Answer 11 · 2026-04-15 17:45:55

38

Views

Number of function pairs

Published on 15 Apr 2026 - 17:45

score 165 · Answer 12 · 2026-04-16 07:10:44

165

Views

How many options of a train if it is built from $5$ locomotives and $17$ wagons?

Published on 16 Apr 2026 - 7:10

score 41 · Answer 13 · 2026-04-16 14:05:45

41

Views

How many possibilites of a photo from $25$ people?

Published on 16 Apr 2026 - 14:05

score 48 · Answer 14 · 2026-05-11 06:12:04

48

Views

How do I uniformly sample from sorted combinations

Published on 11 May 2026 - 6:12

score 44 · Answer 15 · 2026-04-16 09:09:33

44

Views

Is $1_1,1_2,1_3$ different from $1_2,1_3,1_1$ in a permutation?

Published on 16 Apr 2026 - 9:09

List Question

Why is the number of ways of choosing $0$ items from $n$ items $1$?

fibonacci seq. in an array of size n of 2 states {a,b} where no 2 a's can be congruent

Probability of drawing hearts 2 after hearts 3

Combinatorics permutation problem

Number of words with using 2 letters independent to cycle shift

Odds of specific outcome when drawing names

Maximum sum of blocks of a Steiner Quadruple Systems of order 22

Stirling Numbers of second kind defined in terms of coefficients

Directed, planar graph and special type of 2-colorability.

Number of compositions of a natural number $n \in \mathbb{N}$ with at least two parts.

Number of function pairs

How many options of a train if it is built from $5$ locomotives and $17$ wagons?

How many possibilites of a photo from $25$ people?

How do I uniformly sample from sorted combinations

Is $1_1,1_2,1_3$ different from $1_2,1_3,1_1$ in a permutation?

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