4 choose 4
Choosing 4 from 4— order doesn't matter.
Combinations (order doesn't matter)
4C4 = 1
Permutations (order matters): 4P4 = 24
There are 1 ways to choose 4 items from 4when order doesn't matter, using the formula C(n, k) = n! / (k! · (n − k)!).
4 choose k table
| Expression | Combinations |
|---|---|
| 4 choose 0 | 1 |
| 4 choose 1 | 4 |
| 4 choose 2 | 6 |
| 4 choose 3 | 4 |
| 4 choose 4 | 1 |
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Frequently asked questions
What is 4 choose 4?+
4 choose 4 equals 1. It counts the number of ways to choose 4 items from 4 when the order does not matter.
What is the formula for 4 choose 4?+
The combinations formula is C(n, k) = n! / (k! · (n − k)!). For 4 choose 4: 4! / (4! · 0!) = 1.