Combinations and permutations in the mathematical sense are described in several articles.

Described together, in-depth:

• Twelvefold way

Explained separately in a more accessible way:

• Combination
• Permutation

For meanings outside of mathematics, please see both words’ disambiguation pages:

• Combination (disambiguation)
• Permutation (disambiguation)

This disambiguation page lists mathematics articles associated with the same title.
If an internal link led you here, you may wish to change the link to point directly to the intended article.