Question

Determine how many positive integers are $\leq 500$ and divisible by at least one between $6$, $10$ and $25$

score 76 · Answer 1 · 2026-03-25 00:03:29

76

Views

Determine how many positive integers are $\leq 500$ and divisible by at least one between $6$, $10$ and $25$

Published on 25 Mar 2026 - 0:03

score 627 · Answer 2 · 2026-03-17 20:04:11

627

Views

how many solutions in natural numbers are there to the inequality $x_1 + x_2 +....+ x_{10} \leq 70$?

Published on 17 Mar 2026 - 20:04

score 335 · Answer 3 · 2026-03-17 17:25:44

335

Views

Proving Möbius inversion formula for inclusion exlusion

Published on 17 Mar 2026 - 17:25

score 83 · Answer 4 · 2026-03-17 15:18:48

83

Views

how many ways are there to order the word LYCANTHROPIES when C isn't next to A, A isn't next to N and N isn't next to T

Published on 17 Mar 2026 - 15:18

score 2.1k · Answer 5 · 2026-03-17 07:17:21

2.1k

Views

How many ways are there to arrange 4 Americans, 3 Russians, and 5 Chinese into a queue, using inclusion-exclusion principle?

Published on 17 Mar 2026 - 7:17

score 68 · Answer 6 · 2026-03-17 12:08:57

68

Views

Positive natural numbers $≤ 200$ divisible by one and only one between $12$ and $15$

Published on 17 Mar 2026 - 12:08

score 954 · Answer 7 · 2026-03-17 05:58:03

954

Views

Counting problem involving inclusion-exclusion principle

Published on 17 Mar 2026 - 5:58

score 129 · Answer 8 · 2026-03-22 11:34:02

129

Views

combinatorics problem - permutations and e/i

Published on 22 Mar 2026 - 11:34

score 156 · Answer 9 · 2026-03-25 03:21:45

156

Views

Suppose that events $A$, $B$ and $C$ satisfy $P(A\cap B\cap C) = 0$

Published on 25 Mar 2026 - 3:21

score 92 · Answer 10 · 2026-03-25 02:44:58

92

Views

$2n$ students want to sit in $n$ fixed school desks such that no one sits with their previous partner

Published on 25 Mar 2026 - 2:44

score 68 · Answer 11 · 2026-03-17 06:48:03

68

Views

6 tests in one month, each must be separated from other tests by 2 free days in between

Published on 17 Mar 2026 - 6:48

score 102 · Answer 12 · 2026-03-25 04:36:37

102

Views

Proving an equality using Inclusion Exclusion Principle

Published on 25 Mar 2026 - 4:36

score 409 · Answer 13 · 2026-03-25 05:48:55

409

Views

How many ways are there to build a tower of 5 cubes height, out of red, yellow, blue, and green cubes, such that:

Published on 25 Mar 2026 - 5:48

score 638 · Answer 14 · 2026-03-25 04:43:26

638

Views

Arranging $n$ people around a circular table so that no that no one is to the right of the same person as in the previous seating

Published on 25 Mar 2026 - 4:43

score 66 · Answer 15 · 2026-03-25 04:39:30

66

Views

Possible hands in a deck of cards

Published on 25 Mar 2026 - 4:39

List Question

Determine how many positive integers are $\leq 500$ and divisible by at least one between $6$, $10$ and $25$

how many solutions in natural numbers are there to the inequality $x_1 + x_2 +....+ x_{10} \leq 70$?

Proving Möbius inversion formula for inclusion exlusion

how many ways are there to order the word LYCANTHROPIES when C isn't next to A, A isn't next to N and N isn't next to T

How many ways are there to arrange 4 Americans, 3 Russians, and 5 Chinese into a queue, using inclusion-exclusion principle?

Positive natural numbers $≤ 200$ divisible by one and only one between $12$ and $15$

Counting problem involving inclusion-exclusion principle

combinatorics problem - permutations and e/i

Suppose that events $A$, $B$ and $C$ satisfy $P(A\cap B\cap C) = 0$

$2n$ students want to sit in $n$ fixed school desks such that no one sits with their previous partner

6 tests in one month, each must be separated from other tests by 2 free days in between

Proving an equality using Inclusion Exclusion Principle

How many ways are there to build a tower of 5 cubes height, out of red, yellow, blue, and green cubes, such that:

Arranging $n$ people around a circular table so that no that no one is to the right of the same person as in the previous seating

Possible hands in a deck of cards

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