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**uzurpatorul****Member**- Registered: 2009-06-25
- Posts: 11

Diophantus, the Greek mathematician known as the "Father of Algebra", supposedly had the following inscribed on his tombstone:

"Diophantus passed 1/6th of his life in childhood, 1/12th in youth, and 1/7th more as a bachelor.

Five years after his marriage, there was born a son who died four years before his father, at half his father's age."

How old was Diophantus when he died?

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,469

Hi uzurpatorul;

*Last edited by bobbym (2009-07-19 18:42:22)*

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

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**phrontister****Real Member**- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 3,811

That was a nice puzzle, uzurpatorul!

It took a bit of head-scratching before I could find an algebraic solution, but I finally got there.

Same answer as Bobby.

*Last edited by phrontister (2009-07-21 04:42:35)*

"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

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**guin****Member**- Registered: 2013-06-09
- Posts: 1

I've worked it out backwards, but could someone please help me with the algebraic working?

I'm getting stuck on finding an LCD...should it be 28?

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,469

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

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