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Guest Message by DevFuse
 

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My friend and I play in a chess tournament


Best Answer Prime, 01 April 2013 - 03:29 AM

Spoiler for 2 solutions

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10 replies to this topic

#1 BMAD

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Posted 31 March 2013 - 11:24 PM

I was on my junior-high chess team! One time, another seventh grader and I entered an eighth-grade tournament. Every player played every other player once (round-robin);  a win counted as one point and a draw was 1/2 point. My friend and I got a total of 8 points, while all the 8th-graders got the same number of points (as each other).  How many eighth-graders were in the tourney, and why?   

*Note there are two possible answers


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#2 witzar

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Posted 31 March 2013 - 11:55 PM

Spoiler for one obvious solution


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#3 vinay.singh84

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Posted 01 April 2013 - 01:52 AM

Spoiler for i get 5 answers

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#4 witzar

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Posted 01 April 2013 - 02:38 AM

Spoiler for another solution


Edited by witzar, 01 April 2013 - 02:40 AM.

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#5 witzar

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Posted 01 April 2013 - 02:52 AM

Spoiler for Third solution

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#6 Prime

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Posted 01 April 2013 - 03:29 AM   Best Answer

Spoiler for 2 solutions


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Past prime, actually.


#7 jhawk

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Posted 01 April 2013 - 01:02 PM

Spoiler for Prime is right


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#8 witzar

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Posted 01 April 2013 - 01:16 PM

So it looks like I have misunderstood the question assuming that both 7-graders scored 8 points each.

Anyway, "my version" of the puzzle was still interesting to solve.


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#9 jhawk

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Posted 01 April 2013 - 01:16 PM

Spoiler for Furthermore


Edited by jhawk, 01 April 2013 - 01:25 PM.

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#10 witzar

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Posted 01 April 2013 - 01:30 PM

Spoiler for Furthermore

Spoiler for


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