Class 11MathematicsPermutation and CombinationDefinition of permutation, Number of permutations with or without repetition, Conditional permutations
EasyIn how many ways can $4$ red,$3$ yellow,and $2$ green discs be arranged in a row if the discs of the same colour are indistinguishable?
- A$1260$
- B$1260$
- C$1260$
- D$1260$
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In how many ways can $4$ letters be selected and arranged from the word $MATHEMATICS$?
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View SolutionIf the best and the worst paper never appear together,then in how many ways can $6$ examination papers be arranged?
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