Remember, probability is always expressed as a number between 0 and 1.0, not as a percent. Example: What is the probability of getting "heads" when you flip a coin? p=.50 Do not answer in percentage form if the question asks for probability. For #1 to 8, express your probabilities to two decimal places (e.g., .25), unless more are required to get to a number other than 0.

7. There are 10 ping pong balls in a box, numbered 1 to 10. You need to correctly guess which three will be drawn (in any order). This is done without replacement. What is the probability that you will correctly guess which three are drawn?

8. There are 10 ping pong balls in a box, numbered 1 to 10. You need to correctly guess which three will be drawn (in a particular order, so that you must correctly guess each one in order). This is done without replacement. What is the probability that you will correctly guess which three are drawn?