If A and B are two events such that 2P (A) = P (B) = 5/13 and P (A/B) = 2/5, find P (A ∪ B).

If A and B are two events such that

P (A)= 7/13, P (B)=9/13 and P(A ∩ B)=4/13, find P (A/B).

If A and B are two events such that

P(A)=1/2,P (B)=1/3 and P(A ∩ B) = 1/4, find P (A/B), P(B/A), P (A/B) and P (A/B).

If P (A)=6/11,P (B)=5/11 and P (A ∪ B) = 7/11, find

i. P (A ∩ B)

ii. P (A /B)

iii. P (B/A)

A coin is tossed three times. Find P (A/B) in each of the following:

A=Heads on third toss, B=Heads on first two tosses