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Given two hourglasses of 4 minutes and 7 minutes...

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Subject: Given two hourglasses of 4 minutes and 7 minutes...
From: henha...@gmail.com (henh...@gmail.com)
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by: henh...@gmail.com - Fri, 27 May 2022 00:50 UTC

Puzzle:
Given two hourglasses of 4 minutes and 7 minutes,
the task is to measure 9 minutes.

---------- what branch of math. is this related to ?

(there's no point in anyone posting the Answer(s), because they are all over the Net)

if you can think of (or know) a good variation (or a good puzzle with a similar flavor), pls let me know !

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Subject: Re: Given two hourglasses of 4 minutes and 7 minutes...
From: henha...@gmail.com (henh...@gmail.com)
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by: henh...@gmail.com - Thu, 16 Jun 2022 19:27 UTC

On Thursday, May 26, 2022 at 5:50:47 PM UTC-7, henh...@gmail.com wrote:
> Puzzle:
> Given two hourglasses of 4 minutes and 7 minutes,
> the task is to measure 9 minutes.
>
>
> ---------- what branch of math. (maths) is this related to ?

it seems like super-simple Galois theory.

>
> (there's no point in anyone posting the Answer(s), because they are all over the Net)
>
> if you can think of (or know) a good variation (or a good puzzle with a similar flavor), pls let me know !

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interests / rec.puzzles / Given two hourglasses of 4 minutes and 7 minutes...

Subject	Author
Given two hourglasses of 4 minutes and 7 minutes...	henh...@gmail.com
Re: Given two hourglasses of 4 minutes and 7 minutes...	henh...@gmail.com