Question

What is the probability that some people are chosen in different groups?

score 189 · Answer 1 · 2026-04-11 19:15:09

189

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What is the probability that some people are chosen in different groups?

Published on 11 Apr 2026 - 19:15

score 195 · Answer 2 · 2026-04-29 12:41:10

195

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Intersection of $n$ circles and $m$ lines

Published on 29 Apr 2026 - 12:41

score 1.2k · Answer 3 · 2026-04-15 17:03:34

1.2k

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How many strings of $6$ digits are there which use only the digits $0, 1$, or $2$ and in which $2$, whenever it appears, always does so after $1$?

Published on 15 Apr 2026 - 17:03

score 6.7k · Answer 4 · 2026-04-14 08:27:50

6.7k

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How many $7$-digit numbers are there with non-repeating digits?

Published on 14 Apr 2026 - 8:27

score 198 · Answer 5 · 2026-04-30 11:34:02

198

Views

Combinatorics Basics

Published on 30 Apr 2026 - 11:34

score 179 · Answer 6 · 2026-04-14 17:00:58

179

Views

find amount all the 3-digit numbers

Published on 14 Apr 2026 - 17:00

score 107 · Answer 7 · 2026-04-15 03:08:16

107

Views

Probability that at least a certain number of people is chosen

Published on 15 Apr 2026 - 3:08

score 57 · Answer 8 · 2026-04-15 20:05:22

57

Views

Permutations/Combinations where only certain elements can be re-ordered with certain other elements

Published on 15 Apr 2026 - 20:05

score 120 · Answer 9 · 2026-04-11 14:22:24

120

Views

Probability that people are chosen in different groups?

Published on 11 Apr 2026 - 14:22

score 879 · Answer 10 · 2026-04-29 12:28:53

879

Views

Queues and permutation/combination

Published on 29 Apr 2026 - 12:28

score 365 · Answer 11 · 2026-04-12 12:40:11

365

Views

Arranging a packet of skittles with repetitions of flavor

Published on 12 Apr 2026 - 12:40

score 434 · Answer 12 · 2026-05-10 14:51:49

434

Views

Prove a formula with Fibonacci sum

Published on 10 May 2026 - 14:51

score 62 · Answer 13 · 2026-04-11 20:07:25

There are 10 people playing basketball. We want to divide them into two teams of 5. However, Dan and Mike want to be on the same team.

score 215 · Answer 14 · 2026-04-15 11:24:22

215

Views

Probability of having l balls in the same box given N identical balls and n boxes.

Published on 15 Apr 2026 - 11:24

score 124 · Answer 15 · 2026-04-14 22:14:43

124

Views

what if binary had three states like {0,1,2} instead if {0,1} then how many possible combinations we could have?

Published on 14 Apr 2026 - 22:14

List Question

What is the probability that some people are chosen in different groups?

Intersection of $n$ circles and $m$ lines

How many strings of $6$ digits are there which use only the digits $0, 1$, or $2$ and in which $2$, whenever it appears, always does so after $1$?

How many $7$-digit numbers are there with non-repeating digits?

Combinatorics Basics

find amount all the 3-digit numbers

Probability that at least a certain number of people is chosen

Permutations/Combinations where only certain elements can be re-ordered with certain other elements

Probability that people are chosen in different groups?

Queues and permutation/combination

Arranging a packet of skittles with repetitions of flavor

Prove a formula with Fibonacci sum

There are 10 people playing basketball. We want to divide them into two teams of 5. However, Dan and Mike want to be on the same team.

Probability of having l balls in the same box given N identical balls and n boxes.

what if binary had three states like {0,1,2} instead if {0,1} then how many possible combinations we could have?

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