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Xunor the enigmatic
A classical riddle
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1. We turn up both hourglasses at the same time
=> When the 4 mn hourglass is empty we have: (eslaped time: 4mn)
- the 4 min hourglass split this way: 0/4
- the 7 min hourglass split this way: 3/4
2. We turn up the 4 min hourglass
=> When the 7 mn hourglass is empty we have: (eslaped time: 7mn)
- the 4 min hourglass: 1/3
- the 7 min hourglass: 0/7
3. We turn up the 7 min hourglass
=> When the 4 mn hourglass is empty we have: (eslaped time: 8mn)
- the 4 min hourglass: 0/4
- the 7 min hourglass: 6/1
4. We turn up the 7 min hourglass
=> When the 4 mn hourglass is empty we have: (eslaped time: 9mn)
- the 4 min hourglass: 0/4
- the 7 min hourglass: 7/0

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Last edit for this page: 12/26/2008 (03h34pm)