Question

if P(A n B)= (1/2), P(A' n B')= (1/3)P(A)= p, P(B)= 2p, find the value of p

Answer 1

The formulae used are:
1) P(A u B) = P(A) + P(B) -P ( A n B)
2) P( (A u B)' ) = P(A' n B')

p= 1/18