A music class of 8 girls and 7boys is having a recital. If each members is to perform once, how many ways can the program be arranged if?
A). All girls must perform first
B). A girl must perform first and a boy last
C). Elisa and Doug will perform first and last

Question

anonymous · Answer

A) 8! x 7!
B) 8 x 7 x 13! (8 for first spot, 7 for last, 13! for the rest of them)
C) 13! (for everyone else, first and last positions are set)

anonymous · Answer

thnx :D