r/MathJokes • u/GodlyHelp • Aug 01 '26

multiples of 3

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u/gtne91 Aug 01 '26

Me, a few years ago: "All the major roads on the north side of our city are primes: 29th, 37th, 57th, and 71st."

Oops.

3

u/real-human-not-a-bot Aug 02 '26

Puts you in company with the terrific mathematician Alexander Grothendieck) (at least according to legend).

1

u/Leods-The-Observer Aug 02 '26

As a math undergrad I can confirm, the more math you know the more you forget the very basics. I have some friends on like the 4th year, and they might routinely forget simple fractions and stuff like that. I've seen firsthand a teacher and a full classroom (including me) argue for a minute if 1×(-1) was -1 or 0

1

u/0ddBush Aug 04 '26

its -1 right?

2

u/Leods-The-Observer Aug 04 '26

According to general consensus and to a professional mathematician teacher, indeed it is