Question

If `P(A) = 1/2` and `P(B) = 8/9` what is P(A and B)?

Answer 1

Without additional information t is not possible to answer the question.

However, if we assume that the events `A` and `B` are independent events then we can, as, in that case:

`P (A nn B) = P(A) \ P(B)`
`" " = 1/2 \ 8/9`
`" " = 4/9`