50 lines
934 B
Markdown
50 lines
934 B
Markdown
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<!-- Note: This file is automatically generated from source code comments. Changes made in this file will be overridden. -->
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# Function combinations
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Compute the number of ways of picking `k` unordered outcomes from `n`
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possibilities.
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Combinations only takes integer arguments.
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The following condition must be enforced: k <= n.
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## Syntax
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```js
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math.combinations(n, k)
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```
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### Parameters
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Parameter | Type | Description
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--------- | ---- | -----------
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`n` | number | BigNumber | Total number of objects in the set
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`k` | number | BigNumber | Number of objects in the subset
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### Returns
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Type | Description
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---- | -----------
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number | BigNumber | Number of possible combinations.
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### Throws
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Type | Description
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---- | -----------
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## Examples
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```js
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math.combinations(7, 5) // returns 21
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```
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## See also
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[combinationsWithRep](combinationsWithRep.md),
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[permutations](permutations.md),
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[factorial](factorial.md)
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