SOLUTION: how many ways can 9 students (5 girls and 4 boys) be seated in a row if seatings must alternate boy then girl? or girl then boy?

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Question 414739: how many ways can 9 students (5 girls and 4 boys) be seated in a row if seatings must alternate boy then girl? or girl then boy?
Answer by sudhanshu_kmr(1152) About Me  (Show Source):
You can put this solution on YOUR website!

total no. of ways = 2 * 5! * 4!
= 2 * 120 * 24
= 5760