If you've followed this blog for any length of time (Oh, come on, there must be some of you!) you will know I have a penchant for logic puzzles. So here's another one -
I place three cards face down on the table in a line. Two are aces, the third is a jack. I know which is which. Your job is to find an ace. To do this, you are allowed to point to one of the cards and ask me one yes/no question. If you are pointing to an ace, I will answer truthfully. If you are pointing to the jack, I will answer yes or no completely at random - so I could be telling the truth, or I could be lying. Can it be done? Answer tomorrow.
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