1.
If S is the sample space of a random experiment, then P(S) =
A. 
B. 
C. 
D. 
2.
If p is probability of an event A, then p satisfies =
A. 
B. 
C. 
D. 
3.
Let A and B be any two events and S be the corresponding sample space.
Then P(Ā ∩B)=
A. 
B. 
C. 
D. 
4.
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. 
5.
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. 
6.
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. 
7.
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. 
8.
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. 
9.
If P(A)= 0.25 , P(B)= 0.50 , P(AB) = 0.14 then P(neither A or B ) =
A. 
B. 
C. 
D. 
10.
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. 
11.
Two dice are thrown simultaneously. The probability of getting a doublet is =
A. 
B. 
C. 
D. 
12.
A fair die is thrown once . The probability of getting a prime or composite number is
A. 
B. 
C. 
D. 
13.
Probability of getting 3 heads or 3 tails in tossing a coin 3 times is
A. 
B. 
C. 
D. 
14.
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. 
15.
The probability that a leap year will have 53 fridays or 53 saturdays is
A. 
B. 
C. 
D. 
16.
The Probability that a non-leap year will have 53 Sundays and 53 Mondays is
A. 
B. 
C. 
D. 
17.
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. 
18.
The Probability of sure event is
A. 
B. 
C. 
D. 
19.
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. 
20.
If Ø is an impossible event, then P(Ø) =
A. 
B. 
C. 
D.