Combination Calculator
What is 10 choose 3?
10 choose 3 without repeats is 120.
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Permutation Calculator
What is 8P4?
8 permute 4 without repeats is 1,680.
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How many combinations of 12 items taken 2 at a time are there?
12 choose 2 without repeats is 66.
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How many 3 scoop combinations can you make from 5 flavors if repeats are allowed?
5 choose 3 with repeats allowed is 35.
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How many 4 character codes can you make from 6 symbols if repeats are allowed?
6 choices for 4 ordered positions gives 1,296.
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What is 6!?
6! is 720.
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How many distinct arrangements of BANANA are there?
For item-group counts 3, 2, 1, the number of distinct arrangements is 60.
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How many distinct arrangements of BALLOON are there?
For item-group counts 2, 2, 1, 1, 1, the number of distinct arrangements is 1,260.
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What is C(12, 5)?
The binomial coefficient C(12, 5) is 792.
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