P A 04 PB 05 Find P A or B P A 04 PB 05 Find P A or B Fi

P (A) = 0.4 P(B) =0.5

Find P ( A or B)

P (A) = 0.4 P(B) =0.5

Find P ( A or B)

Here P(A and B) is not given.Consider these are mutually exclusive events, P(A and B) = 0

P(A or B ) = P(A)+P(B)-P(A and B) = 0.4+0.5+ 0 = 0.9