The expected number of n types of coupons have appeared at least once?
7000
Expected time to roll all 1 through 6 on a die
40882
Estimate total song ('coupon') number by number of repeats
158045
expected number of cards drawn exactly once (with replacement)
152849
Expected Value of the number of letters we need to draw from the alphabet
62371
Expected number of times a set of 10 integers (selected from 1-100) is selected before all 100 are seen
64720
Expected value of sums
158925
How many sequences of $n$ tosses of a coin that do not contain two consecutive heads have tails as the first toss?
121753
probability that there is at least one defective part
128124
Is it unlikely to get the same number of heads/tails?
39228
Distribution of number of Bernoulli trials to a given number of successes
146720
Expected number I will be on after drawing cards until I get an ace, 2, 3, and so forth
153072
Guessing a subset of $\{1,...,N\}$
148852
calculating expected number of packets.
46971
Number of surjections from $\{1,...,m\}$ to $\{1,...,n\}$
127233
Cardinality of order types in $\mathbb{N}$
29713
$k$ times's draw from $n$ numbers with replacement, each number at least appear once
23882
What are the chances of getting $K$ identical outcomes in a row in a series of $Y$ independent events?