Coupon collector - Chance of collecting desired coupons but not a full set.
110062
Coupon Collector Prob Variation
114008
What are the odds of getting an evolution item from a PokéStop?
24121
Probability to obtain more than X with 3 dice.
36902
How do trading card booster packs drop?
68991
The coupon collectors problem
16763
Probability distribution in the coupon collector's problem
6273
Is there a possibility to choose fairly from three items when every choice can only have 2 options
107688
A contest question on probability
128124
Is it unlikely to get the same number of heads/tails?
130514
best way to pick a random subset from a collection?
75214
Is getting a random integer even possible?
13084
Coupon Collector Problem with packs
59753
Coupon Collector Problem with Batched Selections
53126
Probability of collecting all 5 buying 7 chocolates
46209
Do miss chances stack?
51198
Is there a way to give promo/coupon codes for people to download your app for free?
101922
What's the most efficient way of determine individual card values for my collection?