Question

Basic PIE question appears to be wrong?

score 71 · Answer 1 · 2026-04-13 19:08:49

71

Views

Basic PIE question appears to be wrong?

Published on 13 Apr 2026 - 19:08

score 47 · Answer 2 · 2026-04-14 21:21:16

47

Views

how would prove that $\prod_{k=1}^n 1 - 1_{A_k} = \sum_{I \subset \{1,2,...,n\} }(-1)^{card(I)}1_{A_I}$

Published on 14 Apr 2026 - 21:21

score 490 · Answer 3 · 2026-04-16 12:35:56

490

Views

seating married couples around a circular table

Published on 16 Apr 2026 - 12:35

score 242 · Answer 4 · 2026-04-16 22:38:42

242

Views

counting non-negative integers <100000 (studying for intro discrete math exam)

Published on 16 Apr 2026 - 22:38

score 116 · Answer 5 · 2026-04-13 20:56:05

116

Views

Allocation of seats to the student(P&C-Probability)

Published on 13 Apr 2026 - 20:56

score 876 · Answer 6 · 2026-04-16 06:26:38

876

Views

What is the probability that at least one pottery project and at least one mixed media project will be shown?

Published on 16 Apr 2026 - 6:26

score 321 · Answer 7 · 2026-04-11 21:02:55

321

Views

How many ways are there to choose strings of length $3$ from $S=\{1,2,3,4\}$ for $3$ people if each each digit from $S$ has to appear at least once?

Published on 11 Apr 2026 - 21:02

score 271 · Answer 8 · 2026-04-16 05:33:51

271

Views

In how many ways can string $123456$ be rearranged if at least one character needs to move more than one place from its original position?

Published on 16 Apr 2026 - 5:33

score 1.3k · Answer 9 · 2026-04-12 13:14:26

1.3k

Views

Inclusion-exclusion principle for sets larger than 3

Published on 12 Apr 2026 - 13:14

score 93 · Answer 10 · 2026-04-15 18:37:31

93

Views

How to find the number of solutions to $x_1+x_2+x_3+x_4+y_1+y_2=6$ if $0\le x_i \le 2$ and $y_i$ is divisible by $3$?

Published on 15 Apr 2026 - 18:37

score 349 · Answer 11 · 2026-05-10 12:17:52

349

Views

Bitstrings and set of solutions

Published on 10 May 2026 - 12:17

score 209 · Answer 12 · 2026-03-25 14:20:51

209

Views

Probability that all three shirts were worn

Published on 25 Mar 2026 - 14:20

score 60 · Answer 13 · 2026-04-14 11:58:17

60

Views

Fast way to count how many numbers less than a given one are not divisible by any prime from a given set

Published on 14 Apr 2026 - 11:58

score 156 · Answer 14 · 2026-04-16 05:10:53

156

Views

How many solutions are to $x_1+x_2+x_3+x_4+x_5+x_6=30$ if $x_1=6$ then $x_2\neq 4$, $x_3=6$ then $x_4\neq 4$, $x_5=6$ then $x_6\neq 4$?

Published on 16 Apr 2026 - 5:10

score 1.8k · Answer 15 · 2026-04-14 00:51:38

1.8k

Views

Which jigsaw pieces fit to make a create a square?

Published on 14 Apr 2026 - 0:51

List Question

Basic PIE question appears to be wrong?

how would prove that $\prod_{k=1}^n 1 - 1_{A_k} = \sum_{I \subset \{1,2,...,n\} }(-1)^{card(I)}1_{A_I}$

seating married couples around a circular table

counting non-negative integers <100000 (studying for intro discrete math exam)

Allocation of seats to the student(P&C-Probability)

What is the probability that at least one pottery project and at least one mixed media project will be shown?

How many ways are there to choose strings of length $3$ from $S=\{1,2,3,4\}$ for $3$ people if each each digit from $S$ has to appear at least once?

In how many ways can string $123456$ be rearranged if at least one character needs to move more than one place from its original position?

Inclusion-exclusion principle for sets larger than 3

How to find the number of solutions to $x_1+x_2+x_3+x_4+y_1+y_2=6$ if $0\le x_i \le 2$ and $y_i$ is divisible by $3$?

Bitstrings and set of solutions

Probability that all three shirts were worn

Fast way to count how many numbers less than a given one are not divisible by any prime from a given set

How many solutions are to $x_1+x_2+x_3+x_4+x_5+x_6=30$ if $x_1=6$ then $x_2\neq 4$, $x_3=6$ then $x_4\neq 4$, $x_5=6$ then $x_6\neq 4$?

Which jigsaw pieces fit to make a create a square?

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