SOLUTION: The school head randomly selects 3 students from a class of 15 boys and 18 girls. What is the probability that she select a) a particular student b) a particular boy?

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Question 854412: The school head randomly selects 3 students from a class of 15 boys and 18 girls. What is the probability that she select
a) a particular student
b) a particular boy?
Answer by stanbon(75887) (Show Source):
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The school head randomly selects 3 students from a class of 15 boys and 18 girls. What is the probability that she select
a) a particular student
# of ways to pick three including that student: 1*32C2 = 1*496
# of random groups of three = 33C3 = 5456
P(condition) = 496/5456 = 0.0909
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b) a particular boy?
# of ways to pick three including that particular boy:: 1*32C2 = 496
# of random groups of three: 5456
P(condition) = 0.0909
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Cheers,
Stan H.
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