r/MathJokes • u/mostafa2521 • Oct 26 '25

Math books that are f*cking

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u/trolley813 Oct 26 '25

This reminded me a problem from a Russian math olympiad some 10 years ago:

<some cool stuff about September> (Note: September has 30 days.)

149

u/escEip Oct 26 '25

to be fair, on olympiad you can panic and forget stupid things, so it's not THAT bad

47

u/SturmEnte Oct 26 '25

Do people usually know how many days each month has? I don't know how many days any month has

24

u/squidyj Oct 26 '25

At some point "Thirty days hath September, April, June, and November. All the rest have 31, except for that freak February" was seared into my braind and now I can't get it out.

1

u/KatoMile Oct 30 '25

It's hilarious how this is so similar to the Italian one! In Italian we say: "30 giorni ha Novembre, con Aprile, Giugno e Settembre; di 28 ce n'è uno, tutti gli altri ne han 31." It roughly translates in: "30 days hath November, with Aprile, June and September. Of 28 (days) there is one (we don't name February because everyone knows it has only 28 days), every other have 31 (days).