for the last part of the question, there are only 7 coats so why is the answer 8!
martha2A: Feb. 4, 2015, 6:32 p.m.
I got the answer to be 7!
Amorales: Feb. 4, 2015, 10:01 p.m.
You have two generations of choice. The first is choosing who receives no coat and the second is ordering the rest of the coats. So the answer is 8 x 7! or 8! Hope this helps.
weisbart: Feb. 5, 2015, 7:39 p.m.
Very nice Amorales, good job!
Soniakumr: Feb. 8, 2015, 3:16 p.m.
You could also think of it as each of the 8 people have 8 things to choose from ( no coat, or one of the 7 coats). So in this case, the first person has 8 choices, the second has 7 and so on..