Question

Permutations O level Photograph Seating Arrangement Problem

score 305 · Answer 1 · 2018-09-10 20:58:36

305

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Permutations O level Photograph Seating Arrangement Problem

Published on 10 Sep 2018 - 20:58

score 1.7k · Answer 2 · 2018-09-10 21:43:25

1.7k

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Amount of Number Combinations to Reach a Sum of 10 With Integers 1-9 Using 2 or More Integers

Published on 10 Sep 2018 - 21:43

score 282 · Answer 3 · 2018-09-10 23:18:56

282

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Combination Problem Involving Integers 1-9 to Reach a Sum of 10

Published on 10 Sep 2018 - 23:18

score 2.6k · Answer 4 · 2018-09-11 00:30:10

2.6k

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What is the Probability of Choosing 3 Specific Balls from a 15-Ball Set?

Published on 11 Sep 2018 - 0:30

score 884 · Answer 5 · 2018-09-11 06:52:11

884

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A boy has $3$ library tickets and 8 books of his interest in the library.

Published on 11 Sep 2018 - 6:52

score 63 · Answer 6 · 2026-03-25 19:11:43

63

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The number of ways in which $n$ distinct items can be divided among $r$ groups

Published on 25 Mar 2026 - 19:11

score 110 · Answer 7 · 2018-09-11 13:53:14

110

Views

Ways to arrange a consecutive string of letters with no letter in the alphabetically correct place

Published on 11 Sep 2018 - 13:53

score 110 · Answer 8 · 2018-09-11 15:39:52

110

Views

Finding expected area enclosed by the loop

Published on 11 Sep 2018 - 15:39

score 176 · Answer 9 · 2018-09-12 05:36:44

176

Views

Place $n $ distinct balls in $n $ cells

Published on 12 Sep 2018 - 5:36

score 96 · Answer 10 · 2018-09-12 09:35:23

96

Views

How many combinations in a parliament?

Published on 12 Sep 2018 - 9:35

score 183 · Answer 11 · 2026-03-25 17:42:08

183

Views

Proof of a combination identity: $\sum\limits_{i=0}^m\sum\limits_{j=0}^m\binom{i+j}{i}\binom{2m-i-j}{m-i}=\frac {m+1}2\binom{2m+2}{m+1}$

Published on 25 Mar 2026 - 17:42

score 53 · Answer 12 · 2026-03-25 20:20:28

53

Views

If $3$ couples are randomly seated, what is they probability that at least $1$ couple sits together?

Published on 25 Mar 2026 - 20:20

score 148 · Answer 13 · 2018-09-13 04:43:55

148

Views

Probability problem involving mappings of a finite set into itself.

Published on 13 Sep 2018 - 4:43

score 906 · Answer 14 · 2026-03-25 12:47:19

906

Views

Portfolio weights permutations

Published on 25 Mar 2026 - 12:47

score 786 · Answer 15 · 2018-09-13 09:46:11

786

Views

How to find the number of permutations satisfying the given criterion

Published on 13 Sep 2018 - 9:46

List Question

Permutations O level Photograph Seating Arrangement Problem

Amount of Number Combinations to Reach a Sum of 10 With Integers 1-9 Using 2 or More Integers

Combination Problem Involving Integers 1-9 to Reach a Sum of 10

What is the Probability of Choosing 3 Specific Balls from a 15-Ball Set?

A boy has $3$ library tickets and 8 books of his interest in the library.

The number of ways in which $n$ distinct items can be divided among $r$ groups

Ways to arrange a consecutive string of letters with no letter in the alphabetically correct place

Finding expected area enclosed by the loop

Place $n $ distinct balls in $n $ cells

How many combinations in a parliament?

Proof of a combination identity: $\sum\limits_{i=0}^m\sum\limits_{j=0}^m\binom{i+j}{i}\binom{2m-i-j}{m-i}=\frac {m+1}2\binom{2m+2}{m+1}$

If $3$ couples are randomly seated, what is they probability that at least $1$ couple sits together?

Probability problem involving mappings of a finite set into itself.

Portfolio weights permutations

How to find the number of permutations satisfying the given criterion

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