christianp, 5 months ago to random

Here's a nice puzzle from Tanya Khovanova's blog, who says she saw it on Facebook:

There are 100 cards with integers from 1 to 100. You have three possible scenarios: you pick 18, 19, or 20 cards at random. For each scenario, you need to estimate the probability that the sum of the cards is even. You do not need to do the exact calculation; you just need to say whether the probability is less than, equal to, or more than 1/2.

https://blog.tanyakhovanova.com/2023/12/a-probability-puzzle-from-facebook/

#probability #puzzle #parity

bornach, 7 months ago (edited 7 months ago) to random

[CuriousMarc] explains how the core rope memory, that stored the software which took the Apollo 11 astronauts to the Moon, really works
https://youtu.be/hckwxq8rnr0
Much more complicated than I had expected

#CoreRopeMemory #Apollo11 #CuriousMarc #parity

caseyliss, 8 months ago to random

Absolute win:
in iOS 17, you can tweak the format settings, so that even Americans can use a sensible date format, rather than M/D/Y.

Absolutely brutal:
Editing the format only edits the short version, not the medium/long versions.

Edit: Apple people: FB13204679

[via australia@aussie.zone] Western Australia's lower house of parliament now has equal representation between men and women for the first time (www.abc.net.au)

Post title changed from article title for better internationalisation. Original title:...