N people team up and decide on a strategy for playing a game. Then they walk into a room. On entry to the room, each person is given a hat on which one of the first N natural nos is written. For example, for N=3 the 3 team members may get 2,1,2. Each person can see the numebers written on the other hats, but do not know the number written on his own hat.
Every person then simultaneously guesses the number of his own hat. what strategy can the team follow to make sure that altleast one person on the team guesses his hat correctly.
I really don't have a clue for this...so i categorised as hard!!
Do remember that all have to tell the hat number simultaneouly and not one by one.
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