12C4 — Combinations of 12 Things Taken 4 at a Time
12C4 equals 495 — there are 495 ways to choose 4 items from 12.
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.
12C4 gives the total number of unordered groups of 4 that can be formed from 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.