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IQ Teaser #9
You are in a room with 2 men, 1 of whom always lies, and the other always tells truth. One of them has a diamond. You don't know which tells the truth or lies, or which has the diamond. What 1 question should you ask 1 of the men to be sure of which has the diamond?
Who would the other guy say has the diamond?
Which one of you has the diamond?
Which one of you does NOT have the diamond?
Which one of you is the liar?
Which on of you tells the truth?
Who would the other guy say is the liar?
Who would the other guy say tells the truth?
Do you have the diamond?
Does the other guy have the diamond?
Does the other guy NOT have the diamond?
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