MBA
Exam
Numerical Ability
Permutation and Combination
In how many ways can the letters of the word "DOUBLE" be arranged such that no two vowels are together?? 1) 6!-4! 2) 6!-4!3! 3) 3!4! 4) 6!-3!
Read Solution (Total 2)
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- 6!-4!*3!
720-144
ans=576 - 11 years agoHelpfull: Yes(1) No(0)
- Tot no of ways in which it can double can be arranged is 6!
Case( No Vowel Together)=Case( Tot ways) -Case( All vowel together)
For all vowels together, we have 3! arrangements ( 3 vowels) and these 3 can fill 4 places( 123, 234, 345, 456)
Hence, soln= 6!-4*3!
= 6!-4! - 11 years agoHelpfull: Yes(1) No(2)
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