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4/8 x 3/5

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Q: A committee of 4 boys and 3 girls is chosen from 8 boys and 5 girls One of the boys is a brother of one of the girls Probability that both are in the committee is?
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What is the probability a girl is chosen if 15 students are girls and 10 students are boys?

The ratio of girls to total students is 15:25, or 3:5. Three out of five students are girls so there would be a 60% probability that a girl would be chosen; a 2 out of 5 chance, or 40% probability that a boy would be chosen.


If there are 45 students in a biology class and 23 are girls what is the probability that a student chosen at random will be a boy?

Probability that a girl is chosen = 23/45 = .511 So, the probability that a boy is chosen = 1 - .511 = .489


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If 10 out of 26 are girls, then the probability of randomly choosing a boy is 16 out of 26, or 8 out of 13, or about 0.6154.


What if a class of 25 students has 15 girls and boys if one student is chosen at random what is the probability it is a girl?

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What is probability 2 girls are chosen if 10 students are girls and 15 are boys?

The probability of choosing 2 girls at random from group of 25 students of which10 are girls and 15 are boys is:P( 2 girls) = (10/25)∙(9/24) = 3/20 = 0.15 = 15%


What is the probability of a girl being chosen if there are 10 boys and 14 girls?

If the choice is unbiased, the change is 14/(10+14). If the chooser prefers choosing boys, the probability is 0.


A class of 25 students has 15 girls and 10 boys If one student is chosen at random What is the probability it is a girl?

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A class of 14 boys and 11 girls. What is the probability of selecting a girl 1st and then a girl 2nd and then a boy third.?

Assuming the choices are made randomly and that the chosen people are not returned to the class, the probability is 77/690 = 0.1116 approx.