Question

How many sequences length $n$, taken from $\{1,2,3,...,k\}$ that the sum of the $n$ elements in the sequence will be divisible by $k$.

score 400 · Answer 1 · 2026-03-25 06:22:11

400

Views

How many sequences length $n$, taken from $\{1,2,3,...,k\}$ that the sum of the $n$ elements in the sequence will be divisible by $k$.

Published on 25 Mar 2026 - 6:22

score 259 · Answer 2 · 2026-03-25 06:22:08

259

Views

Let S be a Set and let A be a subset of S. how many options there are to choose 2 subsets from S that their intersection is exactly A?

Published on 25 Mar 2026 - 6:22

score 75 · Answer 3 · 2026-03-25 06:22:08

75

Views

The number of ways to pile n white circles, when in the bottom row there are n white circles?

Published on 25 Mar 2026 - 6:22

score 213 · Answer 4 · 2026-05-05 11:12:09

213

Views

Finding the amount partitions with gives sizes of a multiset

Published on 05 May 2026 - 11:12

score 72 · Answer 5 · 2026-03-25 06:24:56

72

Views

Number of $n\times n$ matrices with fixed columns sums and only one non-zero elements among each row

Published on 25 Mar 2026 - 6:24

score 201 · Answer 6 · 2026-03-25 06:18:57

201

Views

Proving that a map is bijective

Published on 25 Mar 2026 - 6:18

score 264 · Answer 7 · 2026-03-25 06:18:50

264

Views

An infinite division and balls problem

Published on 25 Mar 2026 - 6:18

score 109 · Answer 8 · 2026-03-25 06:17:56

109

Views

Simplify a weighted average with enumerations as weights

Published on 25 Mar 2026 - 6:17

score 61 · Answer 9 · 2026-04-23 07:15:18

61

Views

Strange sum notation

Published on 23 Apr 2026 - 7:15

score 56 · Answer 10 · 2026-03-25 06:24:57

56

Views

Family of multisets that generates the smallest covering

Published on 25 Mar 2026 - 6:24

score 777 · Answer 11 · 2026-03-25 06:24:50

777

Views

Prove set of primes is equal to set of natural numbers

Published on 25 Mar 2026 - 6:24

score 92 · Answer 12 · 2026-03-25 06:22:12

92

Views

8-element permutations of a multiset {3:0,1:1,1:3,1:5,1:8,1:9} with the restriction 0 is not allowed in left or rightmost position

Published on 25 Mar 2026 - 6:22

score 417 · Answer 13 · 2026-03-25 06:24:28

417

Views

How to define a map from a multiset to a multiset

Published on 25 Mar 2026 - 6:24

score 111 · Answer 14 · 2026-04-26 08:43:07

111

Views

Category of Multisets and Spans

Published on 26 Apr 2026 - 8:43

score 46 · Answer 15 · 2026-03-25 06:19:13

46

Views

Most efficient set of characters for cracking passwords (Parallelized)?

Published on 25 Mar 2026 - 6:19

List Question

How many sequences length $n$, taken from $\{1,2,3,...,k\}$ that the sum of the $n$ elements in the sequence will be divisible by $k$.

Let S be a Set and let A be a subset of S. how many options there are to choose 2 subsets from S that their intersection is exactly A?

The number of ways to pile n white circles, when in the bottom row there are n white circles?

Finding the amount partitions with gives sizes of a multiset

Number of $n\times n$ matrices with fixed columns sums and only one non-zero elements among each row

Proving that a map is bijective

An infinite division and balls problem

Simplify a weighted average with enumerations as weights

Strange sum notation

Family of multisets that generates the smallest covering

Prove set of primes is equal to set of natural numbers

8-element permutations of a multiset {3:0,1:1,1:3,1:5,1:8,1:9} with the restriction 0 is not allowed in left or rightmost position

How to define a map from a multiset to a multiset

Category of Multisets and Spans

Most efficient set of characters for cracking passwords (Parallelized)?

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