Vamsi Pavan’s Place

Four
men are lined up on some steps. They are all facing in the same
direction. A wall seperates the fourth man from the other three. So to summarise :-
Man 1 can see men 2 and 3. Man 2 can see man 3. Man 3 can see none of the others. Man 4 can see none of […]

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There are 9 coins. Out of which one is odd one i.e weight is less or more. How many iterations of weighing are required to find odd coin?
Try yourself first and finally, Select all to know the answer.
Answer
It is always possible to find odd coin in 3 weighings and to tell whether the odd coin […]

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