Alarming!

John was very tired after a long day of work. He went to bed at 10 p.m., wound his alarm clock and set it for noon the next day. Since John fell asleep almost immediately, how many hours of sleep did he get before the alarm woke him?

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January 12th, 2011 | Category: Brain Riddle, Mathematical, Real Life |  Email This Riddle

4 guesses to Alarming!

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• EvilCheese

  January 12, 2011 at 6:05 PM

  14 hours…?

• Dude

  January 12, 2011 at 6:14 PM

  No Cheese, that’s not it.
  Did you think it would be that easy?
  Keep trying.

• Paul

  January 13, 2011 at 3:26 AM

  Two – A clock that needs winding only has twelve hours, so the alarm went off at midnight.

• Dude

  January 13, 2011 at 7:09 AM

  You are correct, Paul.

  Any clock that has to be wound would only be able to set 12 hours in advance.

  You’re today’s winner.