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Posted

The False Coin

 

You are given 18 coins but you find out that one of the coins (you don't know which) is fake and weighs less than any of the others.

 

How can you be able to detect the false coin using nothing but a normal balance scale only three times?

http://i157.photobucket.com/albums/t54/badgersocks/FHTG/FHTG%20-%20redone%20shizniz/tgmember11.png

rootbear75> here is me nude <spoiler tag: Pervert... how many of you actually clicked this?>

Samapico> I actually clicked the spoiler before reading what it was

Corey> I clicked it cause i read what sama said first.

darkreb0rn> I clicked it because I wanted to see you naked...

rootbear75> O.o __________________________________

2:IdleRPG> Mr Snuffleluphagus walked face-first into a tree. This terrible calamity has slowed them 0 days, 00:01:22 from level 18.

2:rootbear75> for fucks sake...

Posted

The False Coin

 

You are given 18 coins but you find out that one of the coins (you don't know which) is fake and weighs less than any of the others.

 

How can you be able to detect the false coin using nothing but a normal balance scale only three times?

 

 

 

1) Compare 2 stacks of 6 coins from the 18 coins

 

If set A > B, keep set A; if B > A, keep set B, if A = B, keep the 6 coins you did not weigh.

 

2) Compare 2 stacks of 2 coins from the 6 coins you kept

 

If set A > B, keep set A; if B > A, keep set B, if A = B, keep the 2 coins you did not weigh.

 

3) Compare the 2 coins you kept

 

Whichever weighs less is the false one

 

Posted (edited)
Weigh the first 6 and hope you get lucky. Edited by Chambahs

SSCA Network Operator

SSCA Unreal Tournament Owner

SS Radio Founder

 

Emblazon> when ut gets 300 pop you arent gonna pull a d+ on me and take over the zone are you? lol

Posted

Sama +1...

 

I'll post another when i get home tonight.

http://i157.photobucket.com/albums/t54/badgersocks/FHTG/FHTG%20-%20redone%20shizniz/tgmember11.png

rootbear75> here is me nude <spoiler tag: Pervert... how many of you actually clicked this?>

Samapico> I actually clicked the spoiler before reading what it was

Corey> I clicked it cause i read what sama said first.

darkreb0rn> I clicked it because I wanted to see you naked...

rootbear75> O.o __________________________________

2:IdleRPG> Mr Snuffleluphagus walked face-first into a tree. This terrible calamity has slowed them 0 days, 00:01:22 from level 18.

2:rootbear75> for fucks sake...

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