perplexus.info :: Geometry : Blindfolded at the Great Wall of China

Blindfolded at the Great Wall of China (Posted on 2010-07-29)

You're blindfolded, disoriented, and standing one mile from the Great Wall of China. How far do you have to walk to guarantee that you will run into the wall?

Assume that the wall is infinitely long and straight.

No Solution Yet Submitted by David Shin

Rating: 4.5000 (2 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

re(3): Much shorter solution

| Comment 7 of 10 |

(In reply to re(2): Much shorter solution by Joshua)

Joshua:

Well, that still doesn't work. For example, assume that the wall runs East to West, you start 1 mile south, and you start walking northwest.

Posted by Steve Herman on 2011-09-02 22:30:03

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