Probability scenario

Question

The probability that a pharmacist owned a PC is 0.82 and the probability that a pharmacist owned a Stero set is 0.2 and probabilities of both is 0.65. If the pharmacist owned a TV, what is the probability that the same pharmacist also owned a PC

Answer 1

The pharmacist already owns a TV (P(TV)=1), so the probability of also owning a PC is the product of the two probabilities, that is, P(TV)×P(PC)=1×0.82=0.82. Owning a stereo set is irrelevant.