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Permutation & Combination Calculator
Count permutations (order matters) and combinations (order doesn't) for choosing r items from n.
Tip from Tink: Lottery odds use combinations: 6 numbers from 49 is about 14 million.
Combinations nCr (order doesn't matter)
120
Permutations nPr (order matters)
720
With repetition (nʳ)
1,000
n!
3,628,800
Example: picking 3 of 10 people for a team is a combination; giving out gold, silver and bronze is a permutation.
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How to use the Permutation & Combination Calculator
- Enter total items n and chosen r.
- Read nCr, nPr and more.
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