Question

4. There are 8 people on the debate team. In how many ways can the coach choose 4 members to send to competition?
70
1,680
40,320

Answer 1

choose begins with a C

Answer 2

C(8,4)

Answer 3

what?

Answer 4

oh

Answer 5

So 70 ways

Answer 6

That's right.

Answer 7

\[_{8}P _{4}=\frac{ 8! }{ 4! }=1680\]

Answer 8

Maybe it's that you guys just haven't had coffee, but this answered could not be more wrong. Obviously the coach could not select the same team twice why would he ?
So the answer is not a combination , its permutation problem , and the answer is 1680