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Instead of computing 5! as 5 x 4 x 3 x 2 x 1 simply enter the number you need the factorial of in the box. Do not include the ! symbol in the box below.

The factorial is Make sure you're not blocking active content, if your answer doesn't show, allow blocked content in your browser. Used with permission from Yan Tran More online calculators from Yan here.

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Deb Russell About.com Mathematics

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