A room has 6 doors. In how many ways can a man enter the room through one door and come out through a different door?

Explanation

To solve the problem of how many ways a man can enter a room through one door and come out through a different door when there are 6 doors, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Total Number of Doors**:
The room has a total of 6 doors.

2. **Choose an Entry Door**:
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