Q1. Three companies Zammilk , Bonita and Contact supply 25% , 33% , 40% milk to a supermarket respectively. Past experience show that 5%, 4% and 2% of the milk supplied by the respective companies is stale. If the milk was found to be stale, what is the probability that it was supplied by Zammilk?
Select one:
A) 0.362
B) 0.0345
C) 0.0125
D) 0.238

Q 2.
Events A and B are defined on a sample space with the following probabilities :
P(A) = 0.4, P(B) = 0.5 and P(B/A) = 0.4
Find P(A or B)
Select one :
A) 0.9
B) 0.2
C) 0.7
D) 0.4