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Brain Teaser #15 -

आप are दिया eight coins and told that one of them is counterfeit. The counterfeit one is slightly heavier than the other seven. Otherwise, the coins look identical. Using a simple balance scale, can आप determine which coin is counterfeit using the scale only once?
 Shadowrednblack posted एक साल  से अधिक पुराना
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CassandraLopez said:
yes because it will be heavier than the others.
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posted एक साल  से अधिक पुराना 
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आप sure? Remember, आप can only use the scale once!
Shadowrednblack posted एक साल  से अधिक पुराना
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yes!!! xP
CassandraLopez posted एक साल  से अधिक पुराना
CB4evaGiggles said:
I tricked you. It can't be done with just one try. But it can be done if आप use the scale twice. Weigh three coins with three other coins. If they're the same, then weigh the two remaining coins and the heavier one is the counterfeit. If one of the groups of three was heavier, weigh two of that group of three. If they're even, the third is the counterfeit. Otherwise, the heavier one is the counterfeit.
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posted एक साल  से अधिक पुराना 
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*you tricked me
CB4evaGiggles posted एक साल  से अधिक पुराना
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Ahh, I know what's going on now... XD
Shadowrednblack posted एक साल  से अधिक पुराना
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lol, ik, thnx!!
CB4evaGiggles posted एक साल  से अधिक पुराना
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