Question

Project Euler #162 Little Doubt

score 187 · Answer 1 · 2026-04-14 04:31:45

187

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Project Euler #162 Little Doubt

Published on 14 Apr 2026 - 4:31

score 61 · Answer 2 · 2026-04-11 07:17:31

61

Views

Wrong solution in commission problem.

Published on 11 Apr 2026 - 7:17

score 760 · Answer 3 · 2026-03-25 20:32:34

760

Views

count of good permutations using dynamic programming

Published on 25 Mar 2026 - 20:32

score 147 · Answer 4 · 2026-04-13 14:59:46

147

Views

General method to count number of ways a number N can be written as a product of k Integers

Published on 13 Apr 2026 - 14:59

score 267 · Answer 5 · 2026-03-26 13:01:16

267

Views

Bijective Proof: $\sum_{k=0}^n \binom{n}{k} (2k-1)!! (2n-2k-1)!!=2^n \cdot n!$

Published on 26 Mar 2026 - 13:01

score 131 · Answer 6 · 2026-04-11 19:44:50

confusion about permutations: number of ways of interviewing the candidates when applicants having the same background are interviewed in succession

score 577 · Answer 7 · 2026-04-15 18:34:42

577

Views

How many ways can you arrange all letters in the word "management" so that at least one "m" is adjacent to one "a"?

Published on 15 Apr 2026 - 18:34

score 1k · Answer 8 · 2026-04-14 16:29:14

1k

Views

There are 10 men and 10 women. How many ways are there to arrange these 20 people at a round table with 25 seats?

Published on 14 Apr 2026 - 16:29

score 650 · Answer 9 · 2026-04-13 08:41:14

650

Views

How many distinct samples of size n are there when we sample from a population of size N with replacement?

Published on 13 Apr 2026 - 8:41

score 273 · Answer 10 · 2026-04-11 05:54:07

273

Views

Permutations : split in two classes and group?

Published on 11 Apr 2026 - 5:54

score 1.2k · Answer 11 · 2026-04-15 03:21:09

1.2k

Views

For finite sets (groups) are order, size, cardinality and power the same thing?

Published on 15 Apr 2026 - 3:21

score 224 · Answer 12 · 2026-04-17 13:33:01

224

Views

Arrange n boys and m girls such that no 3 boys are together

Published on 17 Apr 2026 - 13:33

score 164 · Answer 13 · 2026-04-10 23:45:13

164

Views

Permutations and variation with repetitions

Published on 10 Apr 2026 - 23:45

score 2k · Answer 14 · 2026-04-13 08:01:55

2k

Views

Total Number of $4$ Digit Codes with Repeated Digits

Published on 13 Apr 2026 - 8:01

score 37 · Answer 15 · 2026-04-14 02:39:28

37

Views

Combinatorial sum within interval.

Published on 14 Apr 2026 - 2:39

List Question

Project Euler #162 Little Doubt

Wrong solution in commission problem.

count of good permutations using dynamic programming

General method to count number of ways a number N can be written as a product of k Integers

Bijective Proof: $\sum_{k=0}^n \binom{n}{k} (2k-1)!! (2n-2k-1)!!=2^n \cdot n!$

confusion about permutations: number of ways of interviewing the candidates when applicants having the same background are interviewed in succession

How many ways can you arrange all letters in the word "management" so that at least one "m" is adjacent to one "a"?

There are 10 men and 10 women. How many ways are there to arrange these 20 people at a round table with 25 seats?

How many distinct samples of size n are there when we sample from a population of size N with replacement?

Permutations : split in two classes and group?

For finite sets (groups) are order, size, cardinality and power the same thing?

Arrange n boys and m girls such that no 3 boys are together

Permutations and variation with repetitions

Total Number of $4$ Digit Codes with Repeated Digits

Combinatorial sum within interval.

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