12 Choose 5 — What is 12C5?
12C5 equals 792, the number of unique 5-item groups that can be selected from 12 items.
How to use this tool
- Enter n (total items) and r (items chosen) in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your ncr and the full breakdown beneath it.
Find 12C5 to determine how many distinct groups of 5 can be formed from a pool of 12 items.
Frequently asked questions
- What is a combination?
- A combination is an unordered selection. nCr = n!/(r!(n-r)!). For example, C(5,2) = 10 — choosing 2 from 5 ignoring order.