e Value Of C(6,4) Is2.if C(6,r)=20, What Is R?​

answered 1.the value of C(6,4) is2.if C(6,r)=20, what is r?​ See answer suezoameliza suezoameliza

Step-by-step explanation:

1.is15

C(6,4)

C=6!/4!(6-4)

=6x5x4x3x2x1÷4x3x2x1x2x1

=720÷48

=15

2.ris3

C(6,3)

C=6!/3!(6-3)

=6x5x4x3x2x1/3x2x1x3x2x1

=720÷36

=20

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