# 9.8.1. Operations on Events

The table below shows the data of 245 people who went to an exhibition. If one of them is randomly chosen, find the probability that the chosen visitor is a woman or foreigner.

Gender | National | Foreigner | Total |
---|---|---|---|

Man | 59 | 84 | 143 |

Woman | 90 | 12 | 102 |

Total | 149 | 96 | 245 |

- A
- B
- C
- D

### Example

The table below shows the data of 245 people who went to an exhibition. If one of them is randomly chosen, find the probability that the chosen visitor is a woman or foreigner.

Gender | National | Foreigner | Total |
---|---|---|---|

Man | 59 | 84 | 143 |

Woman | 90 | 12 | 102 |

Total | 149 | 96 | 245 |

### Solution

The probability of event

The probability of event

The notation