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There are seven team and each team has to play with three other teams

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There are seven team and each team has to play with three other teams  [#permalink]

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New post 27 Oct 2018, 10:18
9
00:00
A
B
C
D
E

Difficulty:

  95% (hard)

Question Stats:

21% (02:04) correct 79% (02:16) wrong based on 89 sessions

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There are seven team and each team has to play with three other teams in the first round of tournament. What is the minimum number of matches that can happen in the first round?
A) 10
B) 11
C) 12
D) 21
E) 22

Weekly Quant Quiz #6 Question No 6


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Retired Moderator
User avatar
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Joined: 27 Oct 2017
Posts: 1271
Location: India
Concentration: International Business, General Management
GPA: 3.64
WE: Business Development (Energy and Utilities)
There are seven team and each team has to play with three other teams  [#permalink]

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New post 27 Oct 2018, 10:19
Each match is between two teams.. say A B C D E F G.. so for every match two alphabets will appear.. we need each alphabet thrice (three matches per team).. 7*3 = 21 .. but each match has two alphabets so total appearance of alphabets can only be even.. 21 is not possible but 22 is possible (with 11 matches).

Answer = 11 (B)
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Re: There are seven team and each team has to play with three other teams  [#permalink]

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New post 05 Mar 2019, 02:44
Hi,
Can someone please explain why did we round up and not round down? Why 22 and not 20?
GMAT Club Bot
Re: There are seven team and each team has to play with three other teams   [#permalink] 05 Mar 2019, 02:44
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There are seven team and each team has to play with three other teams

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