Posted by **Marko** on Thursday, February 2, 2012 at 10:20pm.

At. The first meeting of a chess club the 9 members decide to have a tournament in which each player plays a game against every other player. How many games will there be??

Can you help me figure this out ?

- Math word problem -
**Reiny**, Thursday, February 2, 2012 at 10:32pm
Each of the 9 players would play against 8 others, that would give us 9x8 or 72

BUT, wouldn't that include such games as

A vs B and B vs A, which is the same game.

So we have to divide by 2 to get all those duplications taken out

number of games = 72/2 = 36

In mathematical symbols that would be

C(9,2) = 9!/(2!7!) = 36

- Math word problem -
**Anonymous**, Friday, February 3, 2012 at 11:54am
John has five more than twice the number of CDs that Kate has. Together they have 100 CDs

## Answer This Question

## Related Questions

- Algebra Grade 7 - The eight members of the Ping Pong Paddlers Club have a ...
- math-i have another question - Player A and B invented a new game. The ...
- 5th Grade Math - Keith played some games of chess at a tournament. He recorded ...
- math - in a round robin tennis tournament involving 7 players, each player will...
- mathematics - in a round robin tennis tournament involving 7 players, each ...
- Math - In the Doubles Game, students can win carnival tickets to spend on games ...
- math - At the first meeting of the chess club, the 10 members decided that ...
- Maths - The game Slice is played using a m×n rectangular piece of paper as a ...
- Math - Two individuals, A and B, are finalist for a chess championship. They ...
- math - the regular season for professinal baseball is 162 games.a player was bat...

More Related Questions