Please solve Q. No.4 Share with your friends Share 0 Rahul K answered this Dear student, There are 5 consonants and 4 vowels in a word of 9 letters.Number of ways of choosing 3 letters out of 9 letters = C39 Number of ways of choosing 3 letters out of 9 letters =9!6! 3! = 9.8.7.6!6! . 3. 2 = 84Number of ways of choosing more than 1 vowel = selecting 2 vowels and 1 consonant + selecting 3 vowels and 0 consonantNumber of ways of choosing more than 1 vowel = C15×C24 + C05×C34Number of ways of choosing more than 1 vowel =5!4! . 1!×4!2! . 2! + 5!5! . 0!×4!1! . 3!Number of ways of choosing more than 1 vowel = 5.4!4! . 1×4.3.2!2! . 2 . 1 + 5!5! . 1×4 . 3!1 . 3! = 30+4 = 34Required probability = 3484 = 1742 Regards. 0 View Full Answer
