Question

they are 15 players on a soccer team.how many ways can a coach select 5 players

Answer 1

I think it is C_15,5

Answer 2

yes - the number of groups of five that can be chosen from 15.
the formula for this is

15! / (15-5)! 5!
or another way to do this is to multiply from 15 down to 11 and divide by 5!

= (15*14*13*12*11) / (5*4*3*2*1)

Answer 3

if groups of the same players count as one; then its 15C5

if they are simply asking in how many orders can they be picked; 15P5

Answer 4

The players can be selected at random in 15.14.13.12.11 ways

Answer 5

but the question is worded poorly