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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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