In how many ways 6 boys and 4 girls can be seated in a row so that they are alternative?
Choices:
A) 14420	B) 12620	C) 17280	D) 21200	E) 24560
6 boys can be seated in 6!   4 girls can be seated in 4!   Required number = 6!4! = 17280   Answer is 17280
<result>C</result>
In how many ways 6 boys and 4 girls can be seated in a row so that they are alternative?