1-There are 9 kids at the playground. I am going to pick 4 kids to be on my team to play some basketball. How many different groups of kids could I pick to be on my team. Since I am going to assign the players to different positions, I care about the order in which they are picked.

A-3024

B-9

C-36

D-126

2-I flip a coin 8 times. I care about the order of the results. How many different possibilities are there?

A-9

B-256

C-64

D-16

3-My friend Don has 12 hats, 6 shirts, 7 pairs of pants, and 8 pairs of shoes that he's going to pick one of each from to make a look. How many different looks can he make?

A-45

B-4032

C-1204

D-3960

4-How many ways can the letters in the word: calculus

be rearranged?

A-10080

B-1260

C-20160

D-5040