13 choose 5
Choosing 5 from 13— order doesn't matter.
Combinations (order doesn't matter)
13C5 = 1,287
Permutations (order matters): 13P5 = 154,440
There are 1,287 ways to choose 5 items from 13when order doesn't matter, using the formula C(n, k) = n! / (k! · (n − k)!).
13 choose k table
| Expression | Combinations |
|---|---|
| 13 choose 5 | 1,287 |
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 13 choose 5?+
13 choose 5 equals 1,287. It counts the number of ways to choose 5 items from 13 when the order does not matter.
What is the formula for 13 choose 5?+
The combinations formula is C(n, k) = n! / (k! · (n − k)!). For 13 choose 5: 13! / (5! · 8!) = 1,287.