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18 replies to this topic

#11 bonanova

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Posted 20 March 2008 - 08:04 PM

Here's another one from Math Magic.

A man has breakfast at his camp. He gets up and travels due North.
After going 10 miles in a straight line he stops for lunch. After lunch he gets up and travels due North. After going 10 miles in a straight line he finds
himself back at camp. Where on earth could he be?

Spoiler for An infinity of different places, all of them exactly ...

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The greatest challenge to any thinker is stating the problem in a way that will allow a solution.
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#12 rookie1ja

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Posted 20 March 2008 - 08:20 PM

nice discussion for this one is here as well

good puzzle ... thread open
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#13 zdr

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Posted 20 March 2008 - 08:36 PM

I don't think the answer is limited to being five miles from the North Pole.

Spoiler for Full Answer


If there is a reason why it would be limited to just five miles, please let me know.

Edited by zdr, 20 March 2008 - 08:42 PM.

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#14 itachi-san

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Posted 20 March 2008 - 08:58 PM

I don't think the answer is limited to being five miles from the North Pole.


Nice one zdr :D I wonder what the mental process is that causes most people to divide the distance in half :huh:


Spoiler for Therefore

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#15 zdr

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Posted 20 March 2008 - 09:20 PM

Nice one zdr :D I wonder what the mental process is that causes most people to divide the distance in half :huh:


Thanks. ;) I was wondering about the division in half tendency people have as well, as I tend to do that sort of thing myself and started to avoid it from past experience. I think it might be because just about everything else from the two journeys is the same, so it seems to fit that it would work that way. It's strange how often people tend to do it though.

Edited by zdr, 20 March 2008 - 09:21 PM.

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#16 jword

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Posted 20 March 2008 - 09:46 PM

The question states he started travelling due North for ten miles in a straight line , it does not say he travelled North ten miles.
Spoiler for North

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#17 Lost in space

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Posted 20 March 2008 - 11:59 PM

Spoiler for quick thought

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#18 Lost in space

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Posted 21 March 2008 - 12:03 AM

i am too quick, less than ten miles from the nth pole works too i think
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#19 jword

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Posted 21 March 2008 - 12:16 AM

i am too quick, less than ten miles from the nth pole works too i think

Yes it does, but the question implied a common denominator for both the base camp and the rest camp -"where on earth am I ?" - albeit not a specific point, but a common location, that location would be the parallel of latitude -Base camp where am I?...Rest camp where am I? 89º 55.0´N.
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