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Famous Problem

Geometry Level 2

A man walks 1 mile south, 1 mile east, and 1 mile north. He ends up exactly where he started. At how many points could he start?

Assume the earth is a solid sphere.

1 \[\infty\] 0 2

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Excel in math and science

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It's hard to learn from lectures and videos

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including olympiad champions, researchers, and professionals.

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by Daniel Wang

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