In how many ways 3 boys and 3 girls can be seated in a row so that boys and girls are alternate?	Select the correct option.
A) 69	B) 70	C) 71	D) 72	E) 73
number of ways = 2*3!*3! = 72   Answer is 72
<result>D</result>
In how many ways 3 boys and 3 girls can be seated in a row so that boys and girls are alternate?