SOLUTION: in a class of 30 students, 3/5 of the class are girls, and 2/5 of the class have black hair, and 1/5 of the girls are girls with black hair. if one student is to be chosen at rando

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Question 1036879: in a class of 30 students, 3/5 of the class are girls, and 2/5 of the class have black hair, and 1/5 of the girls are girls with black hair. if one student is to be chosen at random from the class, what is the probability that the student is a girl with black hair?
Answer by ikleyn(52790)   (Show Source): You can put this solution on YOUR website!
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in a class of 30 students, 3/5 of the class are girls, and 2/5 of the class have black hair, and 1/5 of the girls are girls with black hair.
if one student is to be chosen at random from the class, what is the probability that the student is a girl with black hair?
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The condition is self-contradicting.

There are = 18 girls in the class

and of the girls (of the 18 !) have black hair ??????????????


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