SOLUTION: Ther are 7 girls and 3 boys in a class. Two students are to be randomly chosen for a special project. What is the probability of selecting a boy and a girl.
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Question 786836: Ther are 7 girls and 3 boys in a class. Two students are to be randomly chosen for a special project. What is the probability of selecting a boy and a girl. Answer by edjones(8007) (Show Source):
You can put this solution on YOUR website! Combination = nCr = n!/((n-r)!r!)
((7C1)(3C1))/(10C2)
= (7*3)/45
=21/45 = 7/15 the probability of selecting a boy and a girl.
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Ed
