In how many different ways can the letters of the word 'RETAIL' be arranged such that the vowels must occupy only the even positions?  Choose the correct choice from the following choices:	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 'RETAIL' be arranged such that the vowels must occupy only the even positions?