Question

Probability that m samples without replacement cover the entire set

score 111 · Answer 1 · 2026-03-25 07:41:08

111

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Probability that m samples without replacement cover the entire set

Published on 25 Mar 2026 - 7:41

score 659 · Answer 2 · 2018-03-11 23:43:09

659

Views

How many ways are there to form a 16-digit number in which each digit appears at least once

Published on 11 Mar 2018 - 23:43

score 120 · Answer 3 · 2018-03-12 00:42:18

120

Views

How many $10$ digit numbers containing $1$, $3$, $5$, $7$ and $9$ are there?

Published on 12 Mar 2018 - 0:42

score 1.7k · Answer 4 · 2026-03-27 18:27:38

In how many ways can one yellow, two red and four green beads be placed on a bracelet if the beads are identical apart from colour?

score 54 · Answer 5 · 2026-04-03 00:22:13

54

Views

How many distinct games are there on a set of cards?

Published on 03 Apr 2026 - 0:22

score 219 · Answer 6 · 2026-03-25 07:41:01

219

Views

Combinatorial proof for a Stirling identity

Published on 25 Mar 2026 - 7:41

score 42 · Answer 7 · 2018-03-12 08:02:35

42

Views

Combinatorial Summation proof

Published on 12 Mar 2018 - 8:02

score 6.9k · Answer 8 · 2026-03-25 22:26:48

6.9k

Views

The number of ways in which 10 identical apples can be distributed to six children so that each child receives at least one apple

Published on 25 Mar 2026 - 22:26

score 148 · Answer 9 · 2026-03-27 18:28:07

148

Views

Combinatorics: If my phone has a $5$-pin code to unlock it but I only remember $3$ digits, what are the outcomes?

Published on 27 Mar 2026 - 18:28

score 6.3k · Answer 10 · 2026-03-27 18:27:49

6.3k

Views

Find the number of ways of arranging the letters

Published on 27 Mar 2026 - 18:27

score 685 · Answer 11 · 2018-03-12 12:49:25

Prove that in a 10-element subset of $\{1, \dots , 50 \} $ there exist 2 $5$-element subsets such that the sums of all their elements are equal.

score 92 · Answer 12 · 2026-03-25 13:59:12

92

Views

Ways of choosing ice-cream scoops - intuition/further explanation

Published on 25 Mar 2026 - 13:59

score 50 · Answer 13 · 2018-03-12 14:30:13

50

Views

Finding the numbers having a particular factor,an upper limit and a specific set of digits.

Published on 12 Mar 2018 - 14:30

score 338 · Answer 14 · 2018-03-12 16:33:43

338

Views

Method for approaching combinatorial proofs

Published on 12 Mar 2018 - 16:33

score 396 · Answer 15 · 2026-03-25 06:00:15

396

Views

Given is a binary relation. Determine the Hasse diagram for it and two upper bounds

Published on 25 Mar 2026 - 6:00

List Question

Probability that m samples without replacement cover the entire set

How many ways are there to form a 16-digit number in which each digit appears at least once

How many $10$ digit numbers containing $1$, $3$, $5$, $7$ and $9$ are there?

In how many ways can one yellow, two red and four green beads be placed on a bracelet if the beads are identical apart from colour?

How many distinct games are there on a set of cards?

Combinatorial proof for a Stirling identity

Combinatorial Summation proof

The number of ways in which 10 identical apples can be distributed to six children so that each child receives at least one apple

Combinatorics: If my phone has a $5$-pin code to unlock it but I only remember $3$ digits, what are the outcomes?

Find the number of ways of arranging the letters

Prove that in a 10-element subset of $\{1, \dots , 50 \} $ there exist 2 $5$-element subsets such that the sums of all their elements are equal.

Ways of choosing ice-cream scoops - intuition/further explanation

Finding the numbers having a particular factor,an upper limit and a specific set of digits.

Method for approaching combinatorial proofs

Given is a binary relation. Determine the Hasse diagram for it and two upper bounds

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