Register to reply

Probability problem - birthdays

by Char. Limit
Tags: birthdays, probability
Share this thread:
Char. Limit
#1
Apr6-11, 03:31 AM
PF Gold
Char. Limit's Avatar
P: 1,937
1. The problem statement, all variables and given/known data
44. What is the probability that at least two people in your class (assume a class of 30 students) have the same birthday?
2. Relevant equations

I'm not sure, to be honest.

3. The attempt at a solution

I was helping out my roommate with his probability homework, and this question came up. I'm not sure how to answer it. How is this done?
Phys.Org News Partner Science news on Phys.org
Suddenly, the sun is eerily quiet: Where did the sunspots go?
'Moral victories' might spare you from losing again
Mammoth and mastodon behavior was less roam, more stay at home
Borek
#2
Apr6-11, 04:07 AM
Admin
Borek's Avatar
P: 23,363
http://lmgtfy.com/?q=same+birthday+probability

Char. Limit
#3
Apr6-11, 04:11 AM
PF Gold
Char. Limit's Avatar
P: 1,937
Ahaha... I did not know there was a Wikipedia article on what seemed to me to be just an unusually difficult homework problem. Thanks!


Register to reply

Related Discussions
A simple probability problem involving the law of total probability Calculus & Beyond Homework 1
Probability of birthdays shared in a group Set Theory, Logic, Probability, Statistics 6
I don't understand why we celebrate birthdays. General Discussion 3
Ok, what's up with all the birthdays? General Discussion 8