Records at a particular hospital show that 13 percent of patients are admitted for surgery, 14 percent for obstetrics, and 2.1 percent for both surgery and obstetrics. Suppose that a patient admission record is selected at random. (Enter answers below as decimals.)
(a) The probability that the selected patient admission record was not for surgery is.
(b) The probability that the selected patient admission record was for surgery or obstetrics (or both) is.
(c) If the selected patient admission record was for surgery, what is the probability that it was also for obstetrics?