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15-11-2017
Mathematics

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3 students are selected from a class that has 10 boys and 5 girls. what is the probability that 1 boy and 2 girls are selected?

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15-11-2017

Chances of drawing a boy the first time = 12/16.
Chances of drawing a boy the second time = 11/15.
Chances of drawing a boy the third time = 10/14.

(12/16)(11/15)(10/14) = about 39.3%.

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