Assignment:
In one math class of college there are 10 males and 20 females. The professor makes 3 student teams to work on a group project.
A) How many possible teams can be made?
B) What is a probability that 2 females and 1 male will be in a group?
C) What is a probability of 3 females only?
D) What is a probabilty at least 2 females in a group?
Provide complete and step by step solution for the question and show calculations and use formulas.