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25 August, 21:14

Stephens school is four blocks west and seven blocks south of his home. Use two methods to determine the number of routes he could take to school, travelling west or south at all times

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  1. 25 August, 21:41
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    330 total routes.

    This can be split with 11 total blocks that must be traveled every way. 4 ways west and 7 ways south)

    going west we take 11! / (4! (7!)) = 330 or for going south possibilities 11! / (7! (4!))
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