Here is another brain teaser, which might be interest for Six Sigma. There is castle and spy has been send, in order to enter the castle spy has to guess the password. So he hides in the bush and waits. A trader come, the guard ask him 28, the answer was 14 and trader went into the castle. After that a peasant came, guard ask him 8, the reply was 4 and the peasant entered into the castle. After that a preast came, guard ask him 16, the reply was 8 and preast entered inside the caslte. Spy decided that he knew the password and also approached the castle, guard asked him 12, spy reply 6 and they cut his head off. What is the right password that the spy should say?
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