Timeline for 6 Water Glasses Upside Down
Current License: CC BY-SA 3.0
11 events
| when toggle format | what | by | license | comment | |
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| Dec 24, 2016 at 15:55 | comment | added | Caleb Stanford | @BeastlyGerbil Yes, in fact it is impossible to flip them all over if the number of cups is odd. I have added an answer with a proof. | |
| Dec 24, 2016 at 15:40 | history | edited | Beastly Gerbil | CC BY-SA 3.0 |
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| Dec 24, 2016 at 15:40 | comment | added | Beastly Gerbil | @6005 does it? That's very interesting and now I realise I actually have only trialled that method on even numbers. I'll add that | |
| Dec 24, 2016 at 15:30 | comment | added | Caleb Stanford | The last comment, "This method works for any amount of cups, where you have to turn all of them except one", is not true. It only works for an even number of cups. | |
| Dec 24, 2016 at 15:26 | history | edited | Beastly Gerbil | CC BY-SA 3.0 |
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| Dec 24, 2016 at 15:14 | history | edited | Beastly Gerbil | CC BY-SA 3.0 |
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| Dec 24, 2016 at 15:13 | comment | added | Beastly Gerbil | @Sumurai8 yeah I'm talking about examples such as these where you have to turn all the cups except one | |
| Dec 24, 2016 at 15:12 | comment | added | Sumurai8 |
That last assertion... is not quite true. Unless you mean situations where you have n cups and turn n-1.
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| Dec 24, 2016 at 15:09 | history | edited | Beastly Gerbil | CC BY-SA 3.0 |
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| Dec 24, 2016 at 14:54 | history | edited | Beastly Gerbil | CC BY-SA 3.0 |
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| Dec 24, 2016 at 14:39 | history | answered | Beastly Gerbil | CC BY-SA 3.0 |