Let A and B be independent events

Question

Let A and B be independent events. If P(A) = 1/4 and P(B) = 1/3, find

 

(a) P(A|B).

 

(b) P(B U A).

 

(c) P(A`n B)

 

(d) Find P(A U B|A).

Answer 1

a) p(a/b)= p(a)= 1/4

b) 1/4+1/3 -1/12= 1/2

c) 1/12