In how many ways can 7 exmination paopers be arranged so that the best and the worst papers are never together?

Explanation

To solve the problem of arranging 7 examination papers such that the best and worst papers are never together, we can follow these steps:

### Step 1: Calculate the total arrangements of 7 papers.
The total number of ways to arrange 7 papers is given by the factorial of the number of papers:
\[ \text{Total arrangements} = 7! = 5040 \]

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