[jedzbudynie]

this is more of a statistics fact, but if there is a 1 in x chance of something happening, in x attempts, for large numbers over 50 or so, the likelihood of it happening is about 63%
1-(1-1/x)^x
For example, if there's a 1 in 10,000 chance of getting hit by a meteor if you go outside, if you go outside 10,000 times, you have a 63% chance of getting hit with a meteor at some point. If there's a 1 in a million chance of winning the lottery and you buy a million (random) lottery tickets, you have a 63% chance of winning.
Edit: for the lottery example, the key word is random - yeah if you consciously buy every possible combination then it's 100%. If you buy one ticket in a million different lotteries, or a million randomly generated tickets for any one in a million lottery, then it's 63%

wątek na reddicie

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#matematyka #statystyka #ciekawostki #niechcemisietlumaczyc

[E.....a]

@jedzbudynie: cały wątek jest niesamowity

[A.....t]

@jedzbudynie: Kiedyś pisałem o prawdopodobieństwie, że funkcja md5 ma punkt stały. I dostałem właśnie taki wynik.

Jakby ktoś chciał poczytać skąd się to wzięło po polsku: http://www.wykop.pl/wpis/7064410/informatyka-matematyka-ciekawostkimatematyczne-zas/