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by Biganon 951 days ago
And thanks to 1/e being 0.367, in Pokemon Go when I catch 1000 Pokemon and each of them has a 1 in 1000 chance of being shiny, I have a 36.7% chance of having zero shinies among them, or approximately a 63% chance of the reciprocate, AKA having at least 1 shiny among them.

1000 is arbitrary of course, but the bigger the number the closer to 1/e.

See "Bernoulli trials"