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Posted: Fri Jul 04, 2008 8:05 am
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Posted: Fri Jul 04, 2008 2:47 pm
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Lightwater2520 Actually, It's only three. First seperate the coins into three piles of eight. Weigh two of the piles on either side of the double balance scale. If the scale is level, than the counterfeit coin is in the pile of eight you did not weigh. If one side is higher than the other, then the coin is one of those eight. Then, take the pile of eight the counterfeit coin is in and divide them into t wo piles of two and one pile of three. Weigh the two piles of two on ether side of the balance scale, Keepin the pile of three in your hand. If one side goes up, one of those two coins is counterfeit and you just weigh them against each other. If the scale is level, than the counterfeit coin is one of the three in your hand. Weigh one of the three coins on each side of the scale and keep one in your hand. If one side goes up, than that is the counterfeit coin. If the scale is level, than the counterfeit coin is in your hand. I guess cottage cheese is made backwards.
Just one correction. 3+2+2=7 So, when you get to the 8 coins, you should split them in two groups of 3 and one group of 2. Then weigh the groups of three on each side etc etc. But yeah, the fewest number of measurings is still 3.
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Posted: Sat Jul 05, 2008 7:38 am
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Posted: Sat Jul 05, 2008 11:40 am
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Posted: Sun Jul 06, 2008 9:38 am
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Posted: Sun Jul 06, 2008 9:43 am
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Posted: Sun Jul 06, 2008 2:42 pm
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Posted: Mon Jul 07, 2008 2:21 pm
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Posted: Tue Jul 08, 2008 1:21 pm
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Posted: Tue Jul 08, 2008 2:42 pm
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Posted: Wed Jul 09, 2008 3:58 pm
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Posted: Thu Jul 10, 2008 6:11 am
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Posted: Thu Jul 10, 2008 12:26 pm
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Posted: Thu Jul 10, 2008 4:28 pm
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Posted: Thu Jul 10, 2008 7:37 pm
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