Permutations And Combinations

Question
CBSEENMA11014138

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

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.