10 Choose 3 — What is 10C3?
10C3 equals 120, meaning there are 120 ways to choose 3 items from a group of 10 without regard to order.
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.
Calculate 10C3 to find the number of unordered combinations when selecting 3 items from a set of 10.
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.