Asked by saurabh
there are 15 boys and 10 girls in your class. a faur member committee is to befromedfrom the student of your class. in how many ways this can be done if the comittee consists at least three girls
Answers
Answered by
Reiny
with 3 girls:
= C(10,3) x C(15,1) = ..
with 4 girls
= C(10,4) x C(15,0) =
add them up
= C(10,3) x C(15,1) = ..
with 4 girls
= C(10,4) x C(15,0) =
add them up
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