IMathAS-libretexts

Use intuition to guess the answer to the following question: The probability that at least 2 of the 60 party guests share a birthday is:

quite small--somewhere between a 1% and a 10% chance.
about 1/6 (one out of 6), or a 17% chance, since there are 60 people and 365 days (60/365 is roughly 1/6).
about a 50% chance.
quite high--somewhere around a 75%-80% chance.
very high--a more than 99% chance.