16 choose 2
Choosing 2 from 16— order doesn't matter.
Combinations (order doesn't matter)
16C2 = 120
Permutations (order matters): 16P2 = 240
There are 120 ways to choose 2 items from 16when order doesn't matter, using the formula C(n, k) = n! / (k! · (n − k)!).
16 choose k table
| Expression | Combinations |
|---|---|
| 16 choose 2 | 120 |
Try your own numbers
Need different values? The full permutations & combinations calculator computes nCr and nPr for any n and k.
Frequently asked questions
What is 16 choose 2?+
16 choose 2 equals 120. It counts the number of ways to choose 2 items from 16 when the order does not matter.
What is the formula for 16 choose 2?+
The combinations formula is C(n, k) = n! / (k! · (n − k)!). For 16 choose 2: 16! / (2! · 14!) = 120.