Математическое

Recent scholarship has suggested that the theme for the Variations on a Theme by Joseph Haydn, by Johannes Brahms, opus 56a, was probably composed not by Haydn but by Ignaz Pleyel.

Из того же источника

Ignaz Pleyel was the 24th of 38 children in the family.
двадцать лет подряд рожали двойняшек штоле?

Бытовое

Прибегает дочь: беда, не сможем делать блины. Почему? У нас только пять яиц, а в рецепте написано шесть. Ничего страшного, умножь все остальное на пять шестых.

Это понравилось

Interviewer: Scenario. It’s January 1. You can invest in the stocks that make up the S&P 500. How do you guarantee that you will outperform the index by December 31?
Candidate: (extended silence, no idea)
Interviewer: Think about it statistically. And remember the S&P is market-cap weighted.
Candidate: … I have no idea…
Interviewer: Really? Think about it.
Candidate: (more painful silence) … Sorry, no clue.
Interviewer: Don’t buy the stocks that go down!
Candidate: Ah.