Math Is Fun Forum
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#1 2015-07-25 22:23:21
- KarstarkZ1
- Guest
Hourglass Puzzle.
So, I've got this really werid.. uh. puzzle. I've been given two hourglasses, one lats 7 hours and the other lasts 9 hours, what is the best solution to get to 15 hours with - most importantly - the least number of turns (turning the hourglasses, that is.)
Many thanks for your help.
#2 2015-07-26 11:51:22
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Hourglass Puzzle.
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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