Question

In how many different ways can the letters of the word ‘FLOWER’ be arranged in such a way that the vowels occupy only the odd positions?

A 72 Correct Answer Incorrect Answer
B 36 Correct Answer Incorrect Answer
C 12 Correct Answer Incorrect Answer
D 20 Correct Answer Incorrect Answer

Solution

There are 6 letters in the given word out of which there are 2 vowels and 4 consonants. Now, 2 vowels can be placed at any of the three places out of 3 odd positions. Number of ways of arranging the vowels =3P2= 3 Also, the 4 consonants can be arranged at the remaining 4 positions. Number of ways of arranging the consonants =4P4= 4! Total number of ways = (3 × 4!) = 72

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