Survival of the People Logic puzzles require you to think. You
will have to be logical in your reasoning. There is an island
with 10 inhabitants. One day a monster comes and says that he
intends to eat every one of them but will give them a chance to
survive in the following way: In the morning, the monster will
line up all the people - single file so that the last person
sees the remaining 9, the next person sees the remaining 8, and
so on until the first person that obviously sees no one in front
of himself. The monster will then place black or white hats on
their heads randomly (they can be all white, all black or any
combination thereof). The monster will offer each person
starting with the last one (who sees everyone else's hats) to
guess the color of his/her own hat. The answer can only be one
word: "white" or "black". The monster will eat him on the spot
if he guessed wrong, and will leave him alive if he guessed
right. All the remaining people will hear both the guess and the
outcome of the guess. The