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The strange clock (Posted on 2004-02-17) Difficulty: 3 of 5
I have a very strange clock. At first glance, it looks like a normal clock with three hands and the numbers 1 through 12 all around. The only differences are that the hands are indistinguishable from each other and they are faster. One hand completes a circle in 3 minutes, another in 4 minutes, and the last in 6 minutes. They all go clockwise.

One morning, when I looked at the clock, the hands were all pointing exactly at the numbers 1, 2, and 3.
Later that day, I saw that the three hands were pointing exactly at 6, 10, and 11.

Can you identify which hands I saw each time? Prove it.

See The Solution Submitted by Tristan    
Rating: 2.6667 (6 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution Yeppers Comment 13 of 13 |
3 minute/cycle hand starts at 2
4 minute/cycle hand starts at 3
6 minute/cycle hand starts at 1

the total time is 5 minutes

the 3 minute/cycle hand moves 4 "hours" every minute...starting at 2 and moving for 5 minutes, it ends up at 10
the 4 minute/cycle hand moves 3 "hours" every minute...starting at 3 and moving for 5 minutes, it ends up at 6
the 6 minute/cycle hand moves 2 "hours" every minute...starting at 1 and moving for 5 minutes, it ends up at 11
  Posted by John on 2004-02-24 23:59:07
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