Through the week ending September 16,2011, tiger woods was the leading money winner on the PGA tour with total earnings of $5,517,777. Of the top 10 money winners, 7 players used a title it's brand golf ball. Suppose that we randomly select 2 of the top 10. Money winners.
A.) what is the probability that exactly 1 uses a titleist golf ball?
B.) what is the probability that both use the titleist golf ball?
C.) what is the probability that neither uses a titleist golf ball?