query: A and B flips a coin alternately. A starts. the one how gets `H` first - wins. what is the probability that B wins?
positive_passages.docid: 71331
positive_passages.text: A fair coin is tossed until a head comes up for the first time. The probability of this happening on an odd number toss is?
negative_passages.docid: 15253
negative_passages.text: A coin is tossed $n$ times. What is the probability of getting odd number of heads?
negative_passages.docid: 30586
negative_passages.text: Expected number of games played in a game with 'win by two' rule.
negative_passages.docid: 123289
negative_passages.text: Probability of a repeatedly right answer
negative_passages.docid: 25989
negative_passages.text: How to determine the number of coin tosses to identify one biased coin from another?
negative_passages.docid: 117202
negative_passages.text: Why is this coin-flipping probability problem unsolved?
negative_passages.docid: 139699
negative_passages.text: Probability of a Coin Toss
negative_passages.docid: 65163
negative_passages.text: Expected number of runs in a sequence of coin flips
negative_passages.docid: 90203
negative_passages.text: If you roll a fair six sided die twice, what's the probability that you get the same number both times?
negative_passages.docid: 57754
negative_passages.text: Probability of exactly two heads in four coin flips?
negative_passages.docid: 149455
negative_passages.text: Probability question with interarrival times
negative_passages.docid: 109982
negative_passages.text: Gambler's ruin and coin toss
negative_passages.docid: 97093
negative_passages.text: Probability of winning the game 1-2-3-4-5-6-7-8-9-10-J-Q-K
negative_passages.docid: 6217
negative_passages.text: Probability of a player winning before another
negative_passages.docid: 156248
negative_passages.text: Monty Hall Problem confusion
negative_passages.docid: 35859
negative_passages.text: Conditional Probability: Black and White Balls
negative_passages.docid: 53631
negative_passages.text: Probability question (Birthday problem)