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Questions Tagged with "combinatorics" (Page 12)

Explore solved questions tagged with "combinatorics" or help others by answering their unsolved questions related to "combinatorics".

Prime stepping stones

2 answer

Puzzling Asked 3 years ago

We have an integer n. We have n boxes where each box contains a non-negative amount of balls. Find all the permutations which satisfy some criteria

1 answer

Mathematics Asked 3 years ago by Michael Blane

How to count the number of symmetries of a 3-d object?

1 answer

Mathematics Asked 3 years ago

why we have to divide r! for one time rather than many time?

0 answer

Mathematics Asked 3 years ago

(proposed) elegant solution to IMO 2003 P1

0 answer

Mathematics Asked 3 years ago by MNIShaurya

Use a shortest-paths argument to prove a combinatorics identity

2 answer

Mathematics Asked 3 years ago by walterman

Every tournament has a dominant player

4 answer

Puzzling Asked 3 years ago

Forming 2 teams of five from 11 people, but first person of each team has the captain role.

0 answer

Mathematics Asked 3 years ago by diagoot

Incidence matrix proof.

1 answer

Mathematics Asked 3 years ago

How many solutions are there to $x_1 + x_2 + x_3 + x_4 = 30$ s.t. $x_1 + x_2 le 20$ and $x_3 ge 7$?

1 answer

Mathematics Asked 3 years ago by Lucas Peres

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