If.we.subtract Eb.from.Ea.intersection Eb we get Ea how they have.taken Eb

If.we.subtract Eb.from.Ea.intersection Eb we get Ea how they have.taken Eb n ...l 55%" 7:51 p.m. page 584 v Solution: Let the event in which A fails and B fails be denoted by EA and EB. P (EA) = 0.2 P (EA n Eg) = 0.15 P (B fails alone) —p (EB) — 0.3 -0_15 P(EAAEB) 0.15 = 0.5 P(EH) 0.3 (ii) P (A fails alone) = P (EA) - P (EA n Eg) = 0.2 -0.15 = 0.05 Question