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GRE Math Challenge #16 - Martha invited 4 friends to go with
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09 Sep 2014, 01:41
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88% (00:52) correct
11% (01:25) wrong based on 27 sessions
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Martha invited 4 friends to go with her to the movies. There are 120 different ways in which they can sit together in a row. In how many of those ways is Martha sitting in the middle?
Re: GRE Math Challenge #16 - Martha invited 4 friends to go with
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23 Sep 2017, 08:56
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sandy wrote:
Martha invited 4 friends to go with her to the movies. There are 120 different ways in which they can sit together in a row. In how many of those ways is Martha sitting in the middle?