Permutations And Combinations


Find the number of words formed by arranging the letters of the word ‘DAUGHTER’ so that

(a) not all vowels are together (b) no two vowels are together.


Solution not provided.
Ans. (a) 36000   (b) 14400

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Some More Questions From Permutations and Combinations Chapter

Determine K, so that K + 2, 4K – 6 and 3K – 2 are three consecutive terms of an A.P.