Permutations and Combinations
In how many ways can question papers be arranged so that the best and the worst are never come together?
- none of these
Correct Answer: Option(a)
Given that there are papers the best worst should not be together.
Not be together Total Together.
Total Permutations/ arrangements
Best worst are together The papers are to be considered as one entity arranged with others, this can be done in
But the papers positions can be interchanged
Hence, the answer is