Posted by **Jill** on Friday, February 27, 2009 at 9:28pm.

In hockey, 6 players from each team are on the ice at a time: 1 goalie, 2 defence men, and 3 forwards.

A school hockey team has a total of 17 players: 2 goalies, 6 defensive players, and 9 forwards.

A) How many of these starting line ups include Sam, one of the team's goalies?

B) if the 2 goalies on the team are sick and cannot play, the coach will need to pick one of the defensive players to put in for the goalie. How many possible line ups are there now?

*****The answers to these questions should have something with combinations.

Please help. thanks.

- Math -
**Reiny**, Friday, February 27, 2009 at 10:12pm
a) since the goalie is picked, you still need 2 out of the 6 defensemen --> C(6,2)

and then 3 of the 9 forwards ----> C(9,3)

so no. of lineups = 1xC(6,2)xC(9,3)

= (15)(84) = 1260

b) Choose a goalie from the 6 defensemen

= C(6,1)

now choose 3 defensemen from the reamining 5

= C5,3)

and the 3 forwards from 9

= C(9,3)

so 6(10)(84) = 5040

- Math -
**Jill**, Saturday, February 28, 2009 at 3:41pm
oh ok, that makes sense. thanks

## Answer This Question

## Related Questions

- MATHHH - A hockey game is preparing for a group photo. The team has 1 goalie, 4 ...
- AIG 4th Grade Math - Nellie's soccer team is having a great season. The team is ...
- Ice Hockey - i know some things about ice hockey i know that it is canada's ...
- maths - A small primary school has a total enrolment of 50 students. A total of ...
- math - A basketball team needs 5 players. The team can choose from a group of 7 ...
- math - A basketball team needs 5 players. The team can choose from a group of 7 ...
- math - a basketball team needs 5 players. the team can choose from a group of 7 ...
- math - The coach of a baseball team separates the players into groups for drills...
- Math - The coach of a baseball team separates the players into groups for drills...
- math - There are 11 players on a soccer team. A basket ball team has 5 players. ...

More Related Questions