A/N: Who wants 101 Murder Riddles (Season 1) back??? Hit the comment button guys!
55TH SHOT
(ctto)You've got 27 coins, each of them is 10g, except for 1. The 1 different coin is 9g or 11g (heavier, or lighter by 1g). You should use balance scale that compares what's in the two pans. You can get the answer by just comparing groups of coins.
What is the minimum number weighings that can always guarantee to determine the different coin.
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101MR: Season Of Riddles √
RandomReady for the another round? ;) It's not just Riddles, but logics, codes, and many more. Let us see your intelligence in solving. Credits to all respective owners pf these riddles. Some of the riddles are mine.