1.
If Ø is an impossible event, then P(Ø) =
A. 
B. 
C. 
D. 
2.
If S is the sample space of a random experiment, then P(S) =
A. 
B. 
C. 
D. 
3.
If p is probability of an event A, then p satisfies =
A. 
B. 
C. 
D. 
4.
Let A and B be any two events and S be the corresponding sample space.
Then P(Ā ∩B)=
A. 
B. 
C. 
D. 
5.
The Probability that a student will score centum in mathematics is 4/5. The Probability that he will not score centum is =
A. 
B. 
C. 
D. 
6.
If A and B are two events such that P(A) = 0.25, P(B) = 0.05 and P(A∩B)=0.14, then
P(AUB) =
A. 
B. 
C. 
D. 
7.
There are 6 defective items in a sample of 20 items. One item is drawn at random. The Probability that it is a non-defective item is
A. 
B. 
C. 
D. 
8.
If A and B are mutually exclusive events and S is the Sample space such that
P(A) =1/3P(B) and S= AUB, then P(A)=
A. 
B. 
C. 
D. 
9.
The Probabilities of three mutually exclusive events A, B and C are given
by 1/3,1/4 and 5/12. Then P(AUBUC) is
A. 
B. 
C. 
D. 
10.
If P(A)= 0.25 , P(B)= 0.50 , P(AB) = 0.14 then P(neither A or B ) =
A. 
B. 
C. 
D. 
11.
A bag contains 5 black balls , 4 white balls and 3 red balls. If a ball is selected at random ,
the probability that it is not red is =
A. 
B. 
C. 
D. 
12.
Two dice are thrown simultaneously. The probability of getting a doublet is =
A. 
B. 
C. 
D. 
13.
A fair die is thrown once . The probability of getting a prime or composite number is
A. 
B. 
C. 
D. 
14.
Probability of getting 3 heads or 3 tails in tossing a coin 3 times is
A. 
B. 
C. 
D. 
15.
A card is drawn from a pack of 52 cards at random. The probability of getting neither an ace
nor a king card is
A. 
B. 
C. 
D. 
16.
The probability that a leap year will have 53 fridays or 53 saturdays is
A. 
B. 
C. 
D. 
17.
The Probability that a non-leap year will have 53 Sundays and 53 Mondays is
A. 
B. 
C. 
D. 
18.
The Probability of selecting a queen of hearts when a cards is drawn from a pack of
52 playing cards is
A. 
B. 
C. 
D. 
19.
The Probability of sure event is
A. 
B. 
C. 
D. 
20.
The outcome of a random experiment results in either success or failure. If the probability
of success is twice the probability of failure, then the probability of success is
A. 
B. 
C. 
D.