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1. A card is taken out of a pack of 52 cards numbered 2 to 53. The probability that the numbers on the card is a prime number less than 20 is

1/13

2/13

3/13

4/13

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2. The probability of getting a number between 1 and 100. Which is divisible by one and itself only is

27/185

23/97

25/98

none of these

3. If A and B are two elements such that P(A) = 2/3, P(B) = 3/4, P(A ∩ B) = 1/2, then P(A ∪ B) =

9/8

11/12

17/18

7/12

4. If A and B are two events such that P(A ∪ B) = 0.65, P(A ∩ B) = 0.15, then P(A') + P(B') =

0.6

0.8

1.2

1.4

5. If A, B, C are three events, then P(A ∩ B ∪ C) =

P(A) + P(B) + P(C) - P(A ∩ B) - P(A ∩ C)

P(A) + P(B) + P(C) - P(B)P(C)

P(A ∩ B) + P(A ∩ C) - P(A ∩ B ∩ C)

P(B ∩ C) + P(A ∩ B) - P(A ∩ B ∩ C)

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