In how many different ways can the letters of the word 'DETAIL' be arranged such that the vowels must occupy only the even positions?	Select the correct option:
A) None of these
B) 64
C) 120
D) 36
E) 360
OEOEOE   3 vowels EAI can be arranged on even places in 3!=6 ways. Similarly 3 consonants can be arranged on odd places in 3!=6 ways.   Total = 6*6= 
<gadget id="calculator">6*6</gadget>
<output>36</output>
36.   Answer: 36.
<result>D</result>
In how many different ways can the letters of the word 'DETAIL' be arranged such that the vowels must occupy only the even positions?