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If the best and the worst paper never ap...

If the best and the worst paper never appear together, find in how many ways six examination papers can be arranged.

Text Solution

Verified by Experts

The correct Answer is:
480
If the best and worst papers appear always together, the number of ways is `5!xx2`. Therefore, the required number of ways is as follows.
Total number of ways without any restrictions -Number of ways when best and worst paper are together `=6!-5!xx2=480`.
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