Pi Factorial: Making Mathematicians Cry Since Forever

Pi Factorial: Making Mathematicians Cry Since Forever
pi-memes, mathematics-memes, factorial-memes, notation-memes, mathematical-error-memes | ScienceHumor.io

Someone circled "3.14!" and wrote "Really?" next to it, because that's not how factorial notation works in mathematics. Pi (3.14159...) with an exclamation mark looks like "3.14!" which in math means "3.14 factorial" - the product of all positive integers less than or equal to 3.14. But you can't take the factorial of a non-integer! That's like asking someone to count to blue. The mathematician seeing this is probably having a minor stroke right now. It's the mathematical equivalent of nails on a chalkboard.

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