Hello all! I had a quick question on the (in)famous birthday problem,
The question itself reads :
Assuming that people are equally likely to be born in each of the twelve months, how many people must be gathered to guarantee a probability of at least 0.5 that two of them have birthdays in the same month?
I know the formula for solving the problem is 1 - P(12,k)/12^k <--- k=number of people
However I have no idea how so solve for P(12,k), silly I know.
Anyways, would someone mind pointing me in the right direction, it would be greatly appreciated! Thanks in advance!