usre123 wrote:
Bunuel wrote:
usre123 wrote:
In how many different ways can the letters of the word 'DETAIL' be arranged such that the vowels must occupy only the odd positions?
A. None of these
B. 64
C. 120
D. 36
E. 360
A. None of these
B. 64
C. 120
D. 36
E. 360
OEOEOE
3 vowels EOI can be arranged on odd places in 3!=6 ways. Similarly 3 consonants can be arranged on even places in 3!=6 ways.
Total = 6*6 = 36.
Answer: D.
P.S. This question cannot be from any reliable GMAT source. Please do not post questions from that source again. Thank you.
Ok, I won't, thank you.
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