If you have a lottery (Megamillions) and you sell 20,000,000 tickets, the probability of them all losing is given by:(adsbygoogle = window.adsbygoogle || []).push({});

(135,145,919/135,145,920)^20,000,000 = 0.862448363

A close approximation is given by:

e^-(20,000,000/135,145,920) = 0.8624413

I just learned this from a book. That's pretty cool!

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# The Poisson distribution

**Physics Forums | Science Articles, Homework Help, Discussion**