Joe is desperate and has 3 potential dates with 3 different girls. Betty thinks Joe is hot. Joe predicts the probability of getting a date with her is.90. Donna really likes Joe but won't give him her email address. Joe estimates the probability of getting a date with her to be .70. Finally, Mary won't accept Joe's friend request on Facebook. Joe believes the probability of getting a date with Mary is only .20. a. What is probability Joe gets NO dates? b. What is probability Joe lands at least one date