3 . Suppose you have a perfectly fair 10 - sided die , with sample space S = ( 1 , 2 3 , 4 , 5 6 , 7 8 9 , 10 3 . Now suppose that the 10 - sided die is rolled twice in a row . What is the probability of rolling a 9 on the second roll if a 9 was rolled on the first roll ? A ) 9/ 10 B ) O C ) 1 10 D ) 1/10