What’s the birthday paradox

Question

So the birthday paradox is where if you’re in a room with 23 other people there’s a 50% chance of at least two people having the same birthday. Alternatively, In a room of 75 there’s a 99.9% chance of at least two people matching.

Why is this?

In: 134

Answer 1

There are already good explanations for the math behind the probability, but it’s worth noting that this assumes that births are distributed flatly throughout the year, which isn’t really true.