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| The Three Switches http://worldofkj.com/forum/viewtopic.php?f=10&t=77847 |
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| Author: | Algren [ Fri Jul 10, 2015 4:28 am ] |
| Post subject: | The Three Switches |
The Three Switches Downstairs in a house are three identical on-off switches. One of them controls the lamp in the attic. The puzzle is to work out which switch controls the lamp. The rules are as follows. You are allowed to manipulate the switches all you like, and then you are allowed a single trip to the attic. How do you do it? To clarify: When you are downstairs there is no way to see into the attic, or see reflected light from the attic. Once you have gone to the attic you are not allowed back to the switches. |
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| Author: | MGKC [ Fri Jul 10, 2015 7:29 am ] |
| Post subject: | Re: The Three Switches |
Classic puzzle - always loved this one. |
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| Author: | stuffp [ Fri Jul 10, 2015 9:46 am ] |
| Post subject: | Re: The Three Switches |
Google it. |
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| Author: | Chippy [ Fri Jul 10, 2015 10:16 am ] |
| Post subject: | Re: The Three Switches |
What do the other two switches do? Do they control two other outlets that I can plug other lamps into? |
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| Author: | nghtvsn [ Fri Jul 10, 2015 10:59 am ] |
| Post subject: | Re: The Three Switches |
I'd assume you determine what the two switches control downstairs first and once that's figured out you can flip the right switch. |
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| Author: | Mister Ecks [ Fri Jul 10, 2015 11:33 am ] |
| Post subject: | Re: The Three Switches |
It's a riddle designed to bring out the sexist in all of us. The doctor is actually his mother, a woman! Imagine that, a chick being a doctor. Hahaha. Only in a riddle. |
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