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54 lines
1.4 KiB
Markdown
54 lines
1.4 KiB
Markdown
---
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layout: default
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---
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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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<h1 id="function-combinations">Function combinations <a href="#function-combinations" title="Permalink">#</a></h1>
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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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<h2 id="syntax">Syntax <a href="#syntax" title="Permalink">#</a></h2>
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```js
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math.combinations(n, k)
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```
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<h3 id="parameters">Parameters <a href="#parameters" title="Permalink">#</a></h3>
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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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<h3 id="returns">Returns <a href="#returns" title="Permalink">#</a></h3>
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Type | Description
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---- | -----------
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number | BigNumber | Number of possible combinations.
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<h3 id="throws">Throws <a href="#throws" title="Permalink">#</a></h3>
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Type | Description
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---- | -----------
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<h2 id="examples">Examples <a href="#examples" title="Permalink">#</a></h2>
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```js
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math.combinations(7, 5) // returns 21
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```
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<h2 id="see-also">See also <a href="#see-also" title="Permalink">#</a></h2>
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[combinationsWithRep](combinationsWithRep.html),
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[permutations](permutations.html),
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[factorial](factorial.html)
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