Joe isdesperate 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 onFacebook.Joe believes the probability of getting a date with Mary is only .20.

What is probability Joe lands a date with only Mary (but not the other 2)?