Luis had 4 boxes of party favors. One full box contained 16 bags of favors and each bag had 5 items in it. What is the total number items that Luis had in his possession?
O A. 360
B. 320
O C. 170
OD. 7.5

The answer is B. 320. 64 bags times 5 items in each bag.

The question is asking how many ways can ten team be randomly assigned to 5 games. They can be randomly assigned in nPrC 
r = n!/( n-r)! ways. 
 So we have that 10 teams can be randomly assigned to five games in 10C5 ways. 
 10C5 = 10!/ (10-5)! = 10!/ 5! = 30240 ways. So they can be arranged in 30240 ways.