Answers

2015-02-10T17:47:30+05:30
U should say ‘You will not give me the bronze or the silver coin’.  If this is true, you get the gold coin.  It cannot be a lie, because if it were a lie, it would have to come true!
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2015-02-10T17:59:02+05:30
"You will give me neither copper nor silver coin." If it is true, then I have to get the gold coin. If it is a lie, then the negation must be true, 
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