How to calculate the probability mass function of $X_N$, the number of people getting back their own hat
9411
Number of permutations of $n$ elements where no number $i$ is in position $i$
127459
Approximating a multinomial as $p(\xi_1,\ldots,\xi_N)\propto\exp\left(-\frac{n}{2}\sum_{i=1}^N\frac{(\xi_i-p_i)^2}{p_i}\right)$
102893
Help finding probability generating function
138601
There are $2n+1$ people. For each $n$ people there is somebody who is friend with each of them. Prove there is a "know-them-all" person.
144296
Mean Squared Error (MSE) of parameter $p$ in binomial distribution: intuition
84134
How to get started on this statistics problem?
57651
I am very confused about the probability formula $E[\min(X,k)]=\int_0^kxf(x)dx+k(1-F(k))$
98423
How To Apply and Understand the Generating Function for Number Partitioning
51981
What is the probability of n people from a list of m people being in a random selection of x people from a list of y people?
109657
Probability question of hats
39287
Probability with same number of heads and tails
141165
Probability of $p(x_1<x_2<\max(x_3,x_4))$
79341
Question on a probability question
29225
What is the probability that $x_1+x_2+...+x_n \le n$?
26115
Probability of Birthdays
157228
Could someone help me check my answer on this probability question?
4041
Claims and questions regarding $n$-ball distribution?