Question: How probable is it for an Olympic participant to win one of the three medals in swimming, if all 8 participants have the same probability to win?

P(A) = | Number of events which satisfy condition A | = | desired events |

Number of all possible events | possible events |

How high is the probability to roll a 4 with a six-sided dice?

P({4}) = 1/6

How high ist he probability to roll a 3 or a 5 with a six-sided dice?

P({3, 5}) = 2/6