Question

Solve Real-world Permutation Problems.A new computer store offers a special early-bird prize give-away for its grand opening. The
first 12 customers to enter the store between 7 a.m. and 8 a.m. will receive gift certificates
worth various dollar amounts. If 18 customers gather to enter the store between those hours,
how many ways are there to arrange the twelve prize winners?

Answer 1

because each person will get a different amount, the order in which we select them is important...it is a permutation.
how many different ways can 18 people be put in groups of 12, if the order is important.
18P12

Answer 2

any idea what to do with that?