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n(A) = the number of all possible 3 people selected from 8 Democrats = ( 3 8 ) = 3 ! 5 ! 8 !

n(A) = the number of all possible 3 people selected from 8 Democrats =(38)=3!5!8!=3215!8765!=6876=87=56

how did this person come up with the sequence?

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