# 11.4.1. Calculating Probability

200 people of different nationalities participated in a conference, and their data is as shown in the table. Determine the probability that the chosen person is an Arabic-speaking man or an English-speaking woman.

Participant | Arabic Speaker | English Speaker | French Speaker | Total Sum |
---|---|---|---|---|

Man | 25 | 40 | 15 | 80 |

Woman | 40 | 40 | 40 | 120 |

Sum | 65 | 80 | 55 | 200 |

- A0.325
- B0.4
- C0.725
- D0.275

### Example

200 people of different nationalities participated in a conference, and their data is as shown in the table. Determine the probability that the chosen person is an Arabic-speaking man or an English-speaking woman.

Participant | Arabic Speaker | English Speaker | French Speaker | Total Sum |
---|---|---|---|---|

Man | 25 | 40 | 15 | 80 |

Woman | 40 | 40 | 40 | 120 |

Sum | 65 | 80 | 55 | 200 |

### Solution

The probability of event

The probability of event

The notation

Thus, the probability of selecting an Arabic-speaking man or an English-speaking woman is 0.325.