what is your iq level?

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The central place for discussion of the psychology and pseudo-psychological talk behind various notions of IQ. Gardner, Sternberg, Jensen, etc. Psych is hung up on IQ, but they're often talking past each other. Shame... a simple test some brain teasers... An evil king has 1000 bottles of wine. A neighboring queen plots to kill the bad king, and sends a servant to poison the wine. The king’s guards catch the servant after he has only poisoned one bottle. The guards don’t know which bottle was poisoned, but they do know that the poison is so potent that even if it was diluted 1,000,000 times, it would still be fatal. Furthermore, the effects of the poison take one month to surface. The king decides he will get some of his prisoners in his vast dungeons to drink the wine. However, he has only 10 prisoners at his disposal. Explain how he can figure out what bottle is poisoned, and still be able to drink the rest of the wine in 5 weeks time. You are wearing a blindfold and thick gloves. An infinite number of coins are laid out before you on a table of infinite area. Someone tells you that 20 of these coins are tails and the rest are heads. He says that if you can split the coins into 2 piles where the number of tails coins is the same in both piles, then you win all of the coins. You are allowed to move the coins and to flip them over, but you can never tell what state a coin is currently in (the blindfold prevents you from seeing, and the gloves prevent you from feeling which side is heads or tails). How do you partition the coins so that you can win them all? This is a magic trick performed by two magicians, A and B, with one regular, shuffled deck of 52 cards. A asks a member of the audience to randomly select 5 cards out of a deck. the audience member -- who we will refer to as C from here on -- then hands the 5 cards back to magician A. after looking at the 5 cards, A picks one of the 5 cards and gives it back to C. A then arranges the other four cards in some way, and gives those 4 cards face down, in a neat pile, to B. B looks at these 4 cards and then determines what card is in C’s hand (the missing 5th card). How is this trick done?