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How did he know that how to set his clock?

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One absentminded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he traveled on foot to his friend's place few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock.

How did he know?

posted Jul 18, 2014 by Deepak Chitragar

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2 Solutions

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Since it is a straight desert road there is no obstacles..he might have calculated the time took to reach friends house as he might have started back at the same time he reached his friednds home, like if he reached at 7pm returned at 7am.

solution Jul 27, 2014 by anonymous
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Clocks can measure time even when they do not show the right time. You just have to wind the clock up and...
We have to suppose that the journey to the friend and back lasts exactly the same time and the friend has a clock (showing the correct time) - it would be too easy if mentioned in the riddle.

Suppose he started his journey at the 5PM (but his clock is showing wrong say 3 PM and he dont know it is 5PM) and reached after 2 hrs journey to friends house which shows 7PM and when he returns his clock shows 3+2+2=7 PM so he get to know it took 4 hrs in journey i.e. 2 hrs in half journey. Now he adds 2 to 7 or sets 9 PM in the clock.

solution Jul 27, 2014 by Salil Agrawal



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