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n a group ostudents are to be selected out of these at random for a debate competition. Find theprobability that(i) one is boy and two are girls. (ii) all are boys. (ii) all are girls.school, there are 6 boys and 4 girls. Three |
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Answer» all boys =6/10C3=6/10*9*8*3*2*1=1/720and all girls will be =4/10C3=4/10*9*8*3*2=1/10*9*2*3*2=1/1080 |
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