Monday, May 4, 2009
A man runs a mile south, a mile west, and a mile north and ends up back where he started!
Where must he have begun his journey?
Solution (Highlight):
You begin your journey so that after you walk 1 mile south you are 1/2pi miles from the south pole. Then when you walk 1 mile west you end up where your circle started and can walk 1 mile north to your original starting location.
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