Posted by Fakaapo. Suetusi on .
A factory needs two raw materials, say, A and B. The probability of having an adequate supply of material A is 0.94, whereas the probability of having an adequate supply of material B is 0.96. A study shows that the probability of a shortage of both A and B is 0.02. What is the probability that the factory has a shortage of either material A or B?
(Show full working)

math 
MathMate,
A=0.06
B=0.04
A∩B=0.02
by the inclusion/exclusion principle,
A∪B=(0.06+0.04)0.02=?