Stars and bars

Rarity: Common

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At a glance

Class

Notion

Domain

Science and technology

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What Wikipedia says

In combinatorics, stars and bars (also called sticks and stones, balls and bars, and dots and dividers) is a graphical aid for deriving certain combinatorial theorems. It can be used to solve a variety of counting problems, such as how many ways there are to put n indistinguishable balls into k distinguishable bins.

Excerpt from the Wikipedia article “Stars and bars (combinatorics)”, under the CC BY-SA 4.0 license. Read the article on Wikipedia