OG 2016 Tracker >>> OG2016 Problem Solving Video Solutions (OG Practice)



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OG2016 PS Practice #172.
The diagram above shows the various paths along which a mouse can travel from point X, where it is released, to point V, where it is rewarded with a food pellet. How many different paths from X to V can the mouse take if it goes directly from X to V without retracing any point along a path?
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