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Factorial and Combinations Calculator

Calculate a factorial or number of combinations.

Your inputs

Your result

Enter your information and select Calculate to see the result.

How this calculator works

A factorial multiplies whole numbers from one through the entered number; combinations disregard order.

Change one assumption at a time to see which inputs have the greatest effect on the estimate.

Worked example

5! is 120.

Limitations

This calculator is for educational use; verify important work independently.

Review this educational estimate against current quotes, official information, and your own budget before making a financial decision.