Problem 6. You toss a coin ten times and observe the sequence of heads and tails that results.

a.How many possible outcomes are there?

b.What's the probability that you will get at least one "heads"?

Problem 7. An urn contains 5 red, 6 blue, and 8 green balls.If a set of 3 balls is randomly selected, what is the probability that each of the balls will be?

aof the same color?

b.of different colors?Problem

Problem 8. An instructor gives her class a set of 10 problems with the information that the final exam will consist of a random selection of 5 of them.If a student has figured out how to do 7of the problems, what is the probability that he or she will answer correctly

a.all 5 problems?

b.at least 4 of the problems?