A student is randomly selected in a university Event A denot

A student is randomly selected in a university. Event A denotes that the student uses MasterCard, while event B denotes that the student uses Visa Card. Given that P(A) = 0.48, P(B) =0.42, P(AnB) = 0.21, which option defines the probability that the selected student has neither of the cards. P(A\'nB\') = 0.69 P(AuB)\' = 0.31 P(A\' nB\') = 0.79 P(AnB)\' = 0.79

Solution

Answer is b. P(AuB)^\'=0.31