Question

There are 8 players on a tennis team. The team is planning to play in a doubles tournament. How many different groups of players of 2 players can the coach make, if the position does not matter?

28
64
20,160
40,320

Answer 1

The answer is 28!!!

Explanation:

Use the combination formula to solve:

`C = (n!)/(r!(n-r)!)`

where

n = 8

and

r = 2

`C = (8!)/(2! ~*~ 6!) = 28`

I also got it right, look at the pic. Hope this helps!! :)

Answer 2

the answer should be 28 ..