Important MCQS Probability Questions – 1

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This Quiz contains Multiple Choice Questions about MCQs Probability Questions. It covers the topics of events, experiments, mutually exclusive events, collectively exhaustive events, sure events, impossible events, addition and multiplication laws of probability, etc. Let us start MCQs Probability Questions with Answers:

1. The Complement of $P(A|B)$ is

 
 
 
 
 

2. If $P(A|B)=0.3$

 
 
 
 

3. Events $A$ and $B$ are mutually exclusive. Which of the following statements is true?

 
 
 
 

4. If events $A$ and $B$ are independent events with $P(A)=0.2$ and $P(B)=0.6$, then $P(A \cup B)=$?

 
 
 
 

5. If two events $A$ and $B$ are mutually exclusive events, then

 
 
 
 

6. If $P(A|B)=0.3$ and $P(B)=0.8$, then

 
 
 
 

7. If events $A$ and $B$ are independent events with $P(A)=0.1$ and $P(B)=0.4$, then

 
 
 
 

8. The probability of an intersection of two events is computed by using the

 
 
 
 

9. If $P(A)=0.6$, $P(B)=0.3$, and $P(A \cap B)=0.2$, then $P(B|A)=$?

 
 
 
 

10. If $A$ and $B$ are independent events with $P(A)=0.4$ and $P(B)=0.25$, then $P(A \cup B)=$?

 
 
 
 

11. If events $A$ and $B$ are independent events with $P(A)=0.05$ and $P(B)=0.65$, then $P(A|B)=$?

 
 
 
 

12. The sample space (experimental outcomes) refers to

 
 
 
 

13. In a statistical experiment, each time the experiment is repeated

 
 
 
 

14. If $P(A)=0.5$ and $P(B)=0.5$, then $P(A \cap B)$ is

 
 
 
 

15. The set of all possible outcomes (sample points) is called

 
 
 
 

16. If $A$ and $B$ are independent events with $P(A)=0.6$ and $P(B)=0.6$, then $P(A \cap B)=$?

 
 
 
 

17. The range of probability is

 
 
 
 

18. On a December day, the probability of snow is 0.30. The probability of a “cold” day is 0.50. The probability of snow and a “cold” is 0.15. Do snow and “cold” weather are independent events?

 
 
 
 

19. An experiment that consists of tossing 4 coins successively. The number of sample points in this experiment is

 
 
 
 

20. A six-sided die is tossed three times. The probability of observing three ones in a row is

 
 
 
 


MCQs Probability Questions

MCQs Probability Questions

  • The Complement of $P(A|B)$ is
  • The probability of an intersection of two events is computed by using the
  • If two events $A$ and $B$ are mutually exclusive events, then
  • The range of probability is
  • In a statistical experiment, each time the experiment is repeated
  • The set of all possible outcomes (sample points) is called
  • The sample space (experimental outcomes) refers to
  • An experiment that consists of tossing 4 coins successively. The number of sample points in this experiment is
  • On a December day, the probability of snow is 0.30. The probability of a “cold” day is 0.50. The probability of snow and a “cold” is 0.15. Do snow and “cold” weather are independent events?
  • If $P(A)=0.5$ and $P(B)=0.5$, then $P(A \cap B)$ is
  • If $A$ and $B$ are independent events with $P(A)=0.6$ and $P(B)=0.6$, then $P(A \cap B)=$?
  • If events $A$ and $B$ are independent events with $P(A)=0.2$ and $P(B)=0.6$, then $P(A \cup B)=$?
  • If $A$ and $B$ are independent events with $P(A)=0.4$ and $P(B)=0.25$, then $P(A \cup B)=$?
  • Events $A$ and $B$ are mutually exclusive. Which of the following statements is true?
  • If events $A$ and $B$ are independent events with $P(A)=0.05$ and $P(B)=0.65$, then $P(A|B)=$?
  • A six-sided die is tossed three times. The probability of observing three ones in a row is
  • If $P(A|B)=0.3$
  • If events $A$ and $B$ are independent events with $P(A)=0.1$ and $P(B)=0.4$, then
  • If $P(A|B)=0.3$ and $P(B)=0.8$, then
  • If $P(A)=0.6$, $P(B)=0.3$, and $P(A \cap B)=0.2$, then $P(B|A)=$?

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23 thoughts on “Important MCQS Probability Questions – 1”

    • Please always refer to the question you are asking about. It becomes very difficult to trace the actual question (from MCQs tests) to identify and answer it properly.
      The question you are asking about is very simple. Just use the addition, subtraction and multiplication property of the variance.
      $Var(2) + 3^2 Var(X)=0+9Var(X)=9Var(X)$

      Reply

  10. sir q#19 mai b problem hai…. check it out too…..agar symetric ka concern p se hai to explanation mai n q dia hua hai ?? plz clear it

    Reply

    • can you send the statement of question, it will be easy for me to find. In test all questions and even there answers are randomly displayed.

      Reply

    • correction is made. Please whenever anyone found error do contact with test number and initial statement, so that I can easily search and correct the problem.

      Reply

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