Re: BRAIN TEASERS THREAD
here are 2 decent ones to get started.
RIDDLE NUMBER - DIFFICULTY RATING 3/10
a king has 10 tax-collectors, who each month bring him 10 coins each, and each coin weighs 10 ounces. every month the king uses his magic scale, which can only make one reading per month, to make sure all 1,000 ounces of coins are there. one month, a spy comes to him and tells him one of his collectors is shaving an ounce of each coin. he wants to find out who it is this month, so using one weighing only, how does the king determine which collector is the cheat?
RIDDLE #2 - DIFFICULTY RATING 8.5/10
You have 12 coins, 11 weigh the exact same amount but one (you don't know which) is of a different weight (you also don't know whether its heaver or lighter. you have a scale, using 3 weighings figure out which coin is the odd one and whether it is heavier or lighter.
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