3 choose 1
Choosing 1 from 3— order doesn't matter.
Combinations (order doesn't matter)
3C1 = 3
Permutations (order matters): 3P1 = 3
There are 3 ways to choose 1 items from 3when order doesn't matter, using the formula C(n, k) = n! / (k! · (n − k)!).
3 choose k table
| Expression | Combinations |
|---|---|
| 3 choose 0 | 1 |
| 3 choose 1 | 3 |
| 3 choose 2 | 3 |
| 3 choose 3 | 1 |
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Frequently asked questions
What is 3 choose 1?+
3 choose 1 equals 3. It counts the number of ways to choose 1 items from 3 when the order does not matter.
What is the formula for 3 choose 1?+
The combinations formula is C(n, k) = n! / (k! · (n − k)!). For 3 choose 1: 3! / (1! · 2!) = 3.