6 math students and 14 biology students are having dinner. To prepare said dinner, they need to choose 3 people to set the table, 2
people to make coffee, and 6 people to cook dinner. Each person can only do one task.
a) In how many different ways can they choose which students perform these tasks?
b) if they only give coffee to 10 of the 20 students, what is the probability that they only give coffee to biology students?
c) If they only give coffee to 10 of 20 students, what is the probability that they give coffee to 9 biology students and 1 math
students?
Answers
Answer:
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