## MCQs 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

**2. When we throw a coin then what is the probability of getting a tail?**

A. 2

B. 1/2

C. 5

D. 0

**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

**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

**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

**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

**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)

**8. All possible outcomes for a random experiment are called?**

A. sample space

B. event space

C. numerical space

D. both b and c

**9. What is the marginal probability of dependent events and independent events?**

A. one

B. different

C. same

D. All of these

**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