Consider the diagram below which consists of 3 horizontal lines and 4 vertical lines to form a grid. It shows a partial map of a certain city park with walking paths located on the grid lines. A tourist starts at point A and randomly selects a path to point C walking only to the south and east. Show that the probability that the tourist passes through point B is 3/5.(adsbygoogle = window.adsbygoogle || []).push({});

A-----

1 1 1 1

--- B--

1 1 1 1

------C

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# Tough probability problem

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