1) A coin is tossed twice. What is the probability of getting at least one tail? a) 0.75 b) 0.25 c) 0.5 d) 0.4 2) A bag contains 10 pebbles, 4 of which are blue and rest are red. A pebble is selected at random from the bag. What is the probability that a red pebble will be selected? a) 0.4 b) 0.2 c) 0.6 d) 0.8 3) Given that X and Y are two events such that P(X) = 0.82, P(Y) = 0.24 and P(X∩Y)=0.16 . Find P(X∪Y) a) 0.1 b) 0.9 c) 0.06 d) 0.84 4) Given events such that P(X) = 0.82, P(Y) = 0.24 and P(X∩Y)=0.16 . Find P(X' ∪ Y') a) 0.7 b) 0.06 c) 0.84 d) 0.8 5) Given events such that P(X) = 0.82, P(Y) = 0.24 and P(X∩Y)=0.16 . Find P(Y|X') a) 0.4444 b) 0.5556 c) 0.13 d) 0.8332

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