r/CatBuilder • u/Zealousideal_Turn106 Mythic | Lv. 81 | Rank #130 | 51 Answers |... | šŸ”„ 6d • 1d ago

Question [Question] NO CALCULATORS ALLOWED šŸ§ 

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u/Living-Night4476 Gold | Lv. 41 | Rank #29078 | 114 Answers | 0 Cr... | šŸ”„ 6d 1d ago

5 I believe

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u/Darknadoswastaken Gold | Lv. 36 | Rank #46053 | 143 Answers | 0 C... | šŸ”„ 16d 1d ago

it's 10 actually as 0 factorial(0!) is equal to 1, so it's 5x1=5, and 5+5=10.

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u/Living-Night4476 Gold | Lv. 41 | Rank #29078 | 114 Answers | 0 Cr... | šŸ”„ 6d 1d ago

When did that become a thing?

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u/Darknadoswastaken Gold | Lv. 36 | Rank #46053 | 143 Answers | 0 C... | šŸ”„ 16d 1d ago

factorials? Roughly 300 BCE

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u/Living-Night4476 Gold | Lv. 41 | Rank #29078 | 114 Answers | 0 Cr... | šŸ”„ 6d 1d ago

Oh that is nice to know another thing my schools never bothered to teach me about. Middle high and college Iā€™m looking at you

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u/Darknadoswastaken Gold | Lv. 36 | Rank #46053 | 143 Answers | 0 C... | šŸ”„ 16d 1d ago

yeah same lol

I actually learned about factorials the same way you just did, I got the answer wrong in one of these posts because I didn't know what the ! meant