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League Results Team A B

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Director
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League Results Team A B  [#permalink] New post 16 Nov 2005, 18:38
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League Results

Team A B C D E X
Number of Games Won 4 7 9 2 2

According to the incomplete table above, if each of the 6 teams in the league played each of the other teams exactly twice and there were no ties, how many games did team X win? (Only 2 teams play in a game)

Can someone explain this step by step? thanks
Director
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Posts: 949
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 [#permalink] New post 16 Nov 2005, 18:42
sorry that didnt come out right . here is what it should look like.

Team Number of Games Won

A 4
B 7
C 9
D 2
E 2
X
SVP
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Re: Combinations PS [#permalink] New post 16 Nov 2005, 19:01
total game played = 30
a-b=2
a-c=2
a-d=2
a-e=2
a-x=2
total game a played = 10

b-c = 2
b-d = 2
b-e = 2
b-x = 2
total = 8

c-d=2
c-e=2
c-x=2
total = 6

d-e = 2
d-x=2
total = 4

e-x=2
total = 2.

so all total = 30

x win = 30 -4-7-9-2-2 =6
Re: Combinations PS   [#permalink] 16 Nov 2005, 19:01
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League Results Team A B

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