A group consists of 4 couples in which each of the 4 boys have one girl friend.In how many ways they can be arranged in a straight line such that boys and girls occupies alternate positions? Select.
A) 1142	B) 1152	C) 1252	D) 1342	E) 1424
Total positions are 8.   In that boys can be arranged in 4 places and girls can be arranged in 4 places and hence this can be done in 2 ways.   i.e =&gt; 4! * 4! * 2 = 24*24*2= 
<gadget id="calculator">24*24*2</gadget>
<output>1_152</output>
1152.   ANSWER:1152
<result>B</result>
A group consists of 4 couples in which each of the 4 boys have one girl friend.In how many ways they can be arranged in a straight line such that boys and girls occupies alternate positions?