Including 70264

A group of six, including at least three women, is selected from seven men and four women. Find how many ways we can do this.

Correct answer:

n =  161

Step-by-step explanation:

C2(7)=(27)=2!(72)!7!=2176=21  C4(4)=(44)=4!(44)!4!=11=1  n1=(27) (44)=21 1=21 C3(7)=(37)=3!(73)!7!=321765=35  C3(4)=(34)=3!(43)!4!=14=4  n2=(37) (34)=35 4=140  n=n1+n2=21+140=161

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