query: A question on counting and probability: Six friends hold a Christmas present swap. Each person brings a present, and puts it into a sack...
positive_passages.docid: 23701
positive_passages.text: I have a problem understanding the proof of Rencontres numbers (Derangements)
negative_passages.docid: 121457
negative_passages.text: Probability of a Union
negative_passages.docid: 73323
negative_passages.text: Permutations when some objects are alike
negative_passages.docid: 104666
negative_passages.text: Distributing distinct apples and pears to three people so that each person receives at least one pear
negative_passages.docid: 28508
negative_passages.text: What's the General Expression For Probability of a Failed Gift Exchange Draw
negative_passages.docid: 121605
negative_passages.text: A coin tossing game which leads to a contradiction
negative_passages.docid: 148382
negative_passages.text: A family having 4 children has 3 girl children. What is the probability that their 4th child is a son?
negative_passages.docid: 115717
negative_passages.text: In how many ways can 4 unlabeled blue balls and 2 unlabeled red balls be packed in 5 different boxes?
negative_passages.docid: 48994
negative_passages.text: $n$ balls are thrown randomly into $k$ bins - how many are empty?
negative_passages.docid: 120540
negative_passages.text: Card game probability 3 players
negative_passages.docid: 142180
negative_passages.text: There are 'n' candies and 't' boxes. Find the number of ways to place the candies in the boxes for each of the conditions (given in the problem).
negative_passages.docid: 54674
negative_passages.text: combinations groups question
negative_passages.docid: 50179
negative_passages.text: Probability of two people meeting
negative_passages.docid: 93347
negative_passages.text: If two coins are flipped and one gets head, what is the probability that both get head?
negative_passages.docid: 51981
negative_passages.text: 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?
negative_passages.docid: 95939
negative_passages.text: Combinations of 6 students among 20, at least one male
negative_passages.docid: 83973
negative_passages.text: Coin flipping probability game ; 7 flips vs 8 flips