Free · Counting playground

Combination Counter for Kids

Find how many different groups you can choose when the order does not matter.

  • Clear, kid-friendly steps
  • Private in your browser
  • No signup

Number playground

Try your own numbers

Change the numbers, then press the button to see a clear answer.

Possible groups

120 groups

There are 120 ways to choose 3 items from a set of 10. The order does not matter.

Powered by Fermat.ts, an open-source library available under MIT.

Three simple steps

How to use it

  1. Type one number, two numbers, or a short list.
  2. Press the big button to see the answer and a plain explanation.
  3. Copy the result, then try a new example.

Private by default

Your words and choices stay in this browser tab. There are no accounts, uploads, ads, or trackers inside the tool. Close the tab and the working data is gone.