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There is a classroom of students, 12 males and 10 females, of which seven students are...

There is a classroom of students, 12 males and 10 females, of which seven students are chosen at random to go to the board. Give each answer rounded to four decimal places in the form 0.1234.
a.) What is the probability that no boys are chosen?

b.) What is the probability that the first three students chosen are boys?

c.) What is the probability that at least two girls are chosen?
d.) What is the probability that at least three boys are chosen?

Math   Advanced-Math   
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