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Jeff the fly starts at the point (0,0) in the coordinate plane. At each step, Jeff takes a step to the right, left, up, or down. After 10 steps, how many different points could Jeff end up at?

 Jan 22, 2020
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Jeff can get to any point in the square at (5,5), (5,-5), (-5,-5), (-5,5), so the answer is 100 points.

 Jan 22, 2020

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