Class 11MathematicsPermutations and CombinationsDefinition of permutation, Number of permutations with or without repetition, Conditional permutations
EasyIf the best and the worst paper never appear together,then in how many ways can $6$ examination papers be arranged?
- A$120$
- B$480$
- C$240$
- DNone of these
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MediumWBJEE 2010
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