6C2 — Combinations of 6 Things Taken 2 at a Time
6C2 equals 15 — there are 15 ways to choose 2 items from 6.
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.
6C2 finds the number of unique pairs you can pick from a set of 6 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.