A and B are events such that P(A) = 0.42,
P(B) = 0.48 and P(A and B) = 0.16. Determine
(i) P (not A ) (ii) P (not B) and (iii) P (A or B)
Here P (A) = 0.42, P(B) = 0.48 and P(A ∩ B ) = 0.16
(i) P (not A)=P(¯¯¯¯A)=1−P(A)=1−0.42=0.58(ii) P (not B) = P(¯¯¯¯B)=1−P(B)=1−0.48=0.52We know thatP(A∪B)=P(A)+P(B)−P(A∩B)=0.42+0.48−0.16=0.74.