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Tutor: None Selected Time limit: 1 Day

Apr 22nd, 2015

the number of different choices is 6*5*4*3*2*1 = 720 (or 6! in factorial notation).

For the first city choice there are 6 options, then the number of options reduces by 1 after each city visited.

Apr 22nd, 2015

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Apr 22nd, 2015
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Apr 22nd, 2015
Dec 11th, 2016
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