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| Math Central | Quandaries & Queries |
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Question from penny, a student: What is factorial? For eg. Like 2!, 3! 4! Etc. |
Hi Penny,
For any positive integer the factorial of that integer is the product of all positive integers less than or equal to the original integer. Thus foe example $3! = 3 \times 2 \times 1 = 6$ and $5! = 5 \times 4 \times 3 \times 2 \times = 120.$ By convention we also say that $0! = 1.$
I hope this helps,
Penny
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