Given events A and B are mutually inclusive...P(A or B) if P(A) = 0.4 P(B) = 0.7 P(AΩB) = 0.3I know I have to use the addition rule and the fomulanecessary is P(A or B) = P(A)+P(B)-P(AΩB)I am using the greek symbol as intersection not even sure ifit is appropriate to use that symbol as intersection.Do I just plug the numbers in and get 0.8 as myprobability?