kaiWanderLadalin kaiWanderLadalin

26-11-2016
Mathematics

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8 people are boarding a plane 2 have tickets for first class and board before everyone. In how many ways can these people board the aircraft?

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alsteva alsteva

28-11-2016

[tex]2!6!=2\times1\times6\times5\times4\times3\times2\times1=1440[/tex]

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