CAT
Exam
Numerical Ability
Probability
how many words can be formed from latters of the word 'DIRECTOR' so that the vowels are always together??
Read Solution (Total 3)
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- DIRECTOR
no of vowels = 3 ( i,e,o)
no of consonants = 5( d,r,c,t,r)
3 vowels will be considered as a group while making words as per given condition and 3 vowels in the group can be arranged in 3! ways.
No of words that can be formed from letters of the word 'DIRECTOR' so that the vowels are always together = 3!*6!/2= 6*360= 2160 - 12 years agoHelpfull: Yes(10) No(2)
- DIRECTOR
no of vowels = 3 ( i,e,o)
no of consonants = 5( d,r,c,t,r)
No of words that can be formed from letters of the word 'DIRECTOR' so that the vowels are always together = 3!*5!/2= 6*60= 360 - 12 years agoHelpfull: Yes(0) No(6)
- D is receating two times..factorial 8/factorial 2=20160
- 12 years agoHelpfull: Yes(0) No(5)
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