If you have a group of people in a room, how many do you need to for it to be more likely than not, that two or more will have the same birthday?
Photo by S O C I A L . C U T on Unsplash
Theoretically, the chances of two people having the same birthday are 1 in 365 (not accounting for leap years and the uneven distribution of birthdays across the year), and so odds are you’ll only meet a handful of people in your life who enjoy the same birthday as you. This leads many people to intuitively guess around 180.