Find the smallest number of students for which the probability of a birthday duplicate is at least 0.5
129483
Birthday Probability
78646
Probability mean is less than 5 given that poisson distribution states it is 6
135361
Odds of ellipse from five random points
121457
Probability of a Union
118407
Birthday Problem applied to collisions
108956
Given a probability matrix, find probability that person at zero index can go to other rows
65927
Find the population size that maximizes the probability that two random samples of size $20$ will have exactly $2$ members in common
86902
Consider the smallest number in each of the $n\choose r$ subsets (of size $r$) of $S=\{1,2,\ldots,n\}$...
35899
Simple logic problem: Finding largest and smallest number among 3 numbers
2666
Probability of two people meeting during a certain time.
79341
Question on a probability question
157750
A reverse birthday problem: no pair out of 1 million aliens shares a birthday; what is their year length?
57100
Probability and expectancy problem
133558
How to pick one number from each sorted list so that the difference between the minimum and maximum is as small as possible?
137515
Understanding the "Birthday Problem"
98096
Group of $r$ people at least three people have the same birthday?
108240
Probability: marbles in bag question