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### Puzzles & Brain Teasers

The Chime Clock
Contributed by Andrew Kim

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 Hide all answers   View all answers   Print   Try the Quiz There is a clock that has a special way of telling the time. It does not have any hands or numbers on it, but it has a chimer.If the time is 1 o'clock, it chimes once. If the time is 2 o'clock, it chimes twice, and so forth. The time gap between any two chimes is 3 seconds.How many seconds would it take you to know the time, after the first chime is heard, if it is 4 o'clock? Answer: 12 Solution: If it is 4 o'clock, the clock will chime 3 times after the first chime is heard. Since the time gap between any two chimes is 3 seconds, this will take 3 × 3 = 9 seconds. Now, to know what time it really is, you have to wait an 'extra chime gap' to see if the clock chimes again. Adding the extra 3 seconds, the total time required is 9 + 3 = 12 seconds. Food for thought: Does the solution assume that the time taken for the sound of the chime itself is negligible? Wish to try another puzzle similar in concept to this one? Then click here.   Try the Quiz :     Puzzles & Brain Teasers : The Chime Clock