In a cinema hall, there are three entrance doors and two exit doors. In how many ways can a person enter the hall and then come out?

Explanation

To solve the problem of how many ways a person can enter and exit a cinema hall with three entrance doors and two exit doors, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Entrance Doors**:
There are three entrance doors available for a person to enter the cinema hall. Let's label them as D1, D2, and D3.

2. **Identify the Exit Doors**:
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