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MarkusD Posted 21 years ago
Jokes, Puzzles & Riddles
Tricky logic problem
OK, here we go folks:
I am standing in front of a machine. It has 3 cogs on it, with the numbers 1 to 3 printed in a clockwise fashion. The cogs also turn clockwise.
The machine has two levers, one on the left and one on the right. When I pull the one on the left, the bottom 2 cogs advance to the next number. When I pull the one on the right, the top two cogs advance similarly.
All 3 cogs currently show the number 3. How do I change that to 2,2,1 reading from top to bottom ? There are a total of 9 pulls of the levers. I believe it has to be done in 8.
What is the combination of left and right pulls to get me to 2,2,1 ?
Many Thanks !!!
I am standing in front of a machine. It has 3 cogs on it, with the numbers 1 to 3 printed in a clockwise fashion. The cogs also turn clockwise.
The machine has two levers, one on the left and one on the right. When I pull the one on the left, the bottom 2 cogs advance to the next number. When I pull the one on the right, the top two cogs advance similarly.
All 3 cogs currently show the number 3. How do I change that to 2,2,1 reading from top to bottom ? There are a total of 9 pulls of the levers. I believe it has to be done in 8.
What is the combination of left and right pulls to get me to 2,2,1 ?
Many Thanks !!!
Top answer
I don't think it's possible. Look. The cog in the middle must advance 2, 5 or 8 times in order to show the "2".
- I don't think it's possible.
- Look.
- The cog in the middle must advance 2, 5 or 8 times in order to show the "2".
- This cog will advance each time you pull any of the levers.
- Let's then assume that the lever shoud be pulled 8 times.
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6 Answers
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I don't think it's possible.
Look.
The cog in the middle must advance 2, 5 or 8 times in order to show the "2".
This cog will advance each time you pull any of the levers. Let's then assume that the lever shoud be pulled 8 times.
The top cog must advance 2, 5 or 8 times in order to show the "2".
The bottom cog must advance 1, 4 or 7 times in order to sh
Look.
The cog in the middle must advance 2, 5 or 8 times in order to show the "2".
This cog will advance each time you pull any of the levers. Let's then assume that the lever shoud be pulled 8 times.
The top cog must advance 2, 5 or 8 times in order to show the "2".
The bottom cog must advance 1, 4 or 7 times in order to sh
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There is no solution to this problem! We invite you to pose your solution, which obviously is incorrect.
Anonymous
Anonymous
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Read the problem again, you're wrong - the cogs turn clockwise. The middle cog must advance 1, 4 or 7 times in order to show a "2". And so on...
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AnonymousRead the problem again, you're wrong - the cogs turn clockwise. The middle cog must advance 1, 4 or 7 times in order to show a "2". And so on...Forgot to add - I imagine the numbers are actually ON the cog, so that when it moves clockwise, it shows the previous number.
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That problem gave me a hard time to solve when I played that game too. You have to grab the lever and hold it down, this will cause the middle cog to keep turning, which will allow you to reach 2,2,1.
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