# MCQs of Probability Theory

## MCQs of Probability Theory

Let’s begin with some most important MCs of Probability Theory.

1. When we throw a coin then what is the probability of getting head?

A. 1/2
B. 3
C. 4
D. 1

A

2. When we throw a coin then what is the probability of getting a tail?
A. 2
B. 1/2
C. 5
D. 0

B

3. When we tossed three unbiased coins then what is the probability of getting at least 2 tails?
A. 1/6
B. 1/3
C. 1/2
D. 0

C

4. When we throw a dice then what is the probability of getting the number greater than 5?
A. 1/5
B. 1/6
C. 1/2
D. 1/3

B

5. When we throw two dice then what is the probability of getting a sum 9?
A. 2/9
B. 1/12
C. 1/9
D. All of these

C

6. Events which can never occur together In probability theories then it is classified as?
A. mutually exclusive events
B. collectively exclusive events
C. mutually exhaustive events
D. None of these

A

7. If J and K will be two variables then the Joint probability of independent events J and K is equal to?
A. P(J) + P(K)
B. P(J) * P(K)
C. P(J) * P(K) – P(J * K)
D. P(J) * P(K) + P(J-K)

B

8. All possible outcomes for a random experiment are called?
A. sample space
B. event space
C. numerical space
D. both b and c

D

9. What is the marginal probability of dependent events and independent events?
A. one
B. different
C. same
D. All of these

C

10. When we consider an event B then non-occurrence of event B is?
A. A is equal to zero
B. intersection of A
C. complement of A
D. union of A