Part A: A coach chooses 3 players from the 12 players on the team to be in a team photo for the newspaper. Which expressions represent the situation?

Question

A: 3C12
B:12·11·10 over 3·2·1
C:12! over 13!
D: 12P3 over 3!

Part B: How many groups of 3 players are possible?

A:36
B:72
C:220
D:1,320

Answer 1

3C12 or C(12,3) to me means:
"choose 3 from 12"
isn't that what you are doing?

surely you must know how to evaluate that.

Answer 2

1.B ( 56 )
2.A ( 10 )
3.B and D ( 12 ° 11 ° 10 fraction line 3°2°1 )
4. C ( 220 )

Answer 3

hello, im to sure how to do these problems if someone could explain it to me that would be amazing. thank u.