Hi Analysts

“The probability of X = 30% and Y = 40%. Calculate the probability that either will occur”.

When I saw this question, it seemed to me that I was missing the P(X|Y) or P(Y|X) so that I could calculate the P(XY) as P(XY) = P(X|Y) x P(Y).

How come the solution just says that P(XY) = P(X) x P(Y)? Is the conditional probability not necessary?

Kaplan says the solution is P(XY) = P(X) + P(Y) - (PXY).

All the best.