Probability MCQs with Answers

A bag contains 6 black and 8 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?

• A.$\frac{3}{7}$
• B.$\frac{4}{7}$
• C.$\frac{3}{4}$
• D.$\frac{6}{7}$

What is the probability of getting one Head and one Tail when a coin is tossed twice?

• A.$\frac{1}{4}$
• B.$\frac{1}{2}$
• C.$\frac{3}{4}$
• D.$\frac{1}{3}$

How many number cards are in a standard deck of playing cards?

• A.$52$
• B.$36$
• C.$40$
• D.$48$

The probability of getting an odd number when a fair die is thrown once is:

• A.$\frac{2}{3}$
• B.$\frac{1}{3}$
• C.$\frac{1}{6}$
• D.$\frac{1}{2}$

When two events $A$ and $B$ are mutually exclusive, the probability that either $A$ or $B$ occurs is:

• A.$P(A) - P(B)$
• B.$P(A) \times P(B)$
• C.$P(A) + P(B) - P(A \cap B)$
• D.$P(A) + P(B)$

A bag contains 2 red, 3 green, and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue?

• A.$\frac{1}{3}$
• B.$\frac{11}{21}$
• C.$\frac{5}{21}$
• D.$\frac{10}{21}$

If you flip a fair coin 3 times, what is the probability of getting 3 heads?

• A.$\frac{1}{4}$
• B.$\frac{1}{6}$
• C.$\frac{1}{8}$
• D.$\frac{3}{8}$

If the probability of an event is $1$, what can be said about the event?

• A.It has an even chance of happening
• B.It is impossible to happen
• C.It is certain to happen
• D.It is unlikely to happen

If two dice are rolled, what is the probability that the sum is a prime number whose square is also prime?

• A.$0$
• B.$\frac{1}{6}$
• C.$\frac{5}{36}$
• D.$\frac{1}{12}$

Which of the following probabilities cannot exist?

• A.$0.5$
• B.$-0.5$
• C.$0$
• D.$1$