Question

Find a collection of pairwise independent events each with probability $< p$

score 80 · Answer 1 · 2026-03-25 14:26:13

80

Views

Find a collection of pairwise independent events each with probability $< p$

Published on 25 Mar 2026 - 14:26

score 153 · Answer 2 · 2018-04-10 12:00:10

153

Views

Probability that the sum of $6$ dice is $10$

Published on 10 Apr 2018 - 12:00

score 179 · Answer 3 · 2026-04-01 09:51:53

179

Views

Restricted Growth Function and Partition

Published on 01 Apr 2026 - 9:51

score 126 · Answer 4 · 2018-04-10 12:47:02

126

Views

combinatorics select sport teams

Published on 10 Apr 2018 - 12:47

score 189 · Answer 5 · 2026-04-07 09:00:22

189

Views

$q$-analog confusion

Published on 07 Apr 2026 - 9:00

score 154 · Answer 6 · 2026-03-25 09:36:34

154

Views

16 programmers were asked if they knew Pascal, C++ and Java. How many of them knew C++ and Java simultaneously but did not know Pascal?

Published on 25 Mar 2026 - 9:36

score 121 · Answer 7 · 2018-04-10 16:21:08

121

Views

Make $3$ piles of $120$ from $241$ coins

Published on 10 Apr 2018 - 16:21

score 120 · Answer 8 · 2018-04-10 17:25:46

120

Views

Number of ways of grouping n labeled objects in r non-empty unlabeled groups.

Published on 10 Apr 2018 - 17:25

score 3.1k · Answer 9 · 2026-03-26 06:25:50

3.1k

Views

combinations with repetitions allowed, order does not matter, n less than k

Published on 26 Mar 2026 - 6:25

score 135 · Answer 10 · 2026-03-25 16:02:07

135

Views

Variable transformation $x\to x+1$ in Fibonacci-polynomial $F_n(x)$

Published on 25 Mar 2026 - 16:02

score 23 · Answer 11 · 2018-04-10 21:26:41

23

Views

Total number of possible ways to repair N damaged components with M number of crews

Published on 10 Apr 2018 - 21:26

score 218 · Answer 12 · 2026-03-26 00:58:25

218

Views

Complete sequence of sequences

Published on 26 Mar 2026 - 0:58

score 189 · Answer 13 · 2018-04-10 22:21:33

189

Views

Is the numerator of $\sum_{k=0}^{n}{(-1)^k\binom{n}{k}\frac{1}{2k+1}}$ always a power of $2$ in lowest terms?

Published on 10 Apr 2018 - 22:21

score 100 · Answer 14 · 2026-03-25 11:03:44

100

Views

Proving that if $a+b = c+d$ and $a!b! = c!d!$ then either $a = c$ and $b = d$ or $a = d$ and $b = c$

Published on 25 Mar 2026 - 11:03

score 708 · Answer 15 · 2026-03-25 01:15:26

708

Views

Combinatorial rule for a stable stack of bricks.

Published on 25 Mar 2026 - 1:15

List Question

Find a collection of pairwise independent events each with probability $< p$

Probability that the sum of $6$ dice is $10$

Restricted Growth Function and Partition

combinatorics select sport teams

$q$-analog confusion

16 programmers were asked if they knew Pascal, C++ and Java. How many of them knew C++ and Java simultaneously but did not know Pascal?

Make $3$ piles of $120$ from $241$ coins

Number of ways of grouping n labeled objects in r non-empty unlabeled groups.

combinations with repetitions allowed, order does not matter, n less than k

Variable transformation $x\to x+1$ in Fibonacci-polynomial $F_n(x)$

Total number of possible ways to repair N damaged components with M number of crews

Complete sequence of sequences

Is the numerator of $\sum_{k=0}^{n}{(-1)^k\binom{n}{k}\frac{1}{2k+1}}$ always a power of $2$ in lowest terms?

Proving that if $a+b = c+d$ and $a!b! = c!d!$ then either $a = c$ and $b = d$ or $a = d$ and $b = c$

Combinatorial rule for a stable stack of bricks.

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