Question

If you’re good with permutations in math 30 please help and answer this easy question below real answers only

a soccer coach must choose 3 out of 10 players to kick tie breaking penalty shots. assuming the coach must designate the order of the 3 players, the number of different arrangements she has available is

a) 10!/7!

b) 10!/3!7!

c) 10!/3!

d) 10!/3!3!4!

Answer 1

Answer: a) 10!/7!

Explanation:

The "quick" way of answering this is: 10 × 9 × 8 = 720

If you are using the formula then you get:

`(10!)/((10-3)!)\quad =\large\boxed{(10!)/(7!)}\quad = 720`