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RideAnS [48]
3 years ago
10

You have nine gold coins, but one isn’t pure. one has been minted with a cheap alloy, and is known to be heavier than the others

. you have a simple balance scale. how do you determine the impure coin with only two weighings?
Mathematics
1 answer:
Nookie1986 [14]3 years ago
7 0
Compare the impure one, with the rest of the pure gold ones.

i think. 
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