In how many different ways can the letters of the word 'DETAIL' be arranged such that the consonants must occupy only the even positions?	Choose the correct choice from the following options:  A) None of these  B) 64  C) 120  D) 36  E) 360
D   3 consonants DTL can be arranged in 3!=6 ways. Similarly 3 vowels 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 consonants must occupy only the even positions?