Probability Quizzes: Test Your Understanding of Chance and Probability

Question 1

A fair coin is tossed three times. What is the probability of getting at least two heads?

Accepted Answer

3 in 8

Answer

1 in 4

Answer

1 in 8

Answer

1 in 2

Question 2

A bag contains 5 red marbles, 3 blue marbles, and 2 green marbles. If a marble is drawn without looking, what is the experimental probability of drawing a blue marble?

Accepted Answer

3 in 10

Answer

1 in 2

Answer

1 in 4

Answer

1 in 3

Question 3

A biased coin has a 70% chance of landing on heads. If the coin is flipped 10 times, what is the expected number of heads?

Accepted Answer

8

Answer

7

Answer

9

Answer

10

Question 4

Which of the following probability distributions shows a uniform distribution?

Accepted Answer

A bar graph with equal-sized bars

Answer

A bell-shaped curve

Answer

A skewed graph

Answer

A line graph with a constant slope

Question 5

A bag contains 7 blue balls, 5 red balls, and 3 green balls. If you draw a ball from the bag randomly without putting it back, what is the chance of drawing a blue ball?

Accepted Answer

7/15

Answer

1/3

Answer

1/5

Answer

1/2

Question 6

Which of the following is NOT a factor that affects probability?

Accepted Answer

Color of the object being used

Answer

Number of possible outcomes

Answer

Number of favorable outcomes

Answer

Type of object being used

Question 7

A team has a 60% chance of winning a game. What is the probability that they will lose?

Accepted Answer

40%

Answer

10%

Answer

20%

Answer

60%

Question 8

Which of the following probability distributions is used to model the number of successes in a sequence of independent trials?

Accepted Answer

Binomial Distribution

Answer

Normal Distribution

Answer

Poisson Distribution

Answer

Uniform Distribution

Question 9

What's the chance of getting a 6 when rolling a regular six-sided die?

Accepted Answer

1 out of 6

Answer

1 out of 2

Answer

1 out of 3

Answer

1 out of 4

Question 10

What's the opposite of 'rolling a number less than 3' on a die?

Accepted Answer

Rolling 3 or more

Answer

Rolling more than 3

Answer

Rolling 2 or less

Answer

Rolling less than 2

Question 11

A bag has marbles of different colors. The chance of drawing a blue marble is 2 out of 5, and the chance of drawing a red marble is 1 out of 5. What's the chance of not drawing a blue marble?

Accepted Answer

4 out of 5

Answer

1 out of 5

Answer

2 out of 5

Answer

3 out of 5

Question 12

In a bag containing 5 red marbles, 3 blue marbles, and 2 green marbles, what is the probability of drawing a blue marble?

Accepted Answer

1/3

Answer

1/5

Answer

1/2

Answer

2/3

Question 13

A bag contains 9 marbles, 4 red, 3 blue, and 2 green. If two marbles are drawn without replacement, what is the probability of drawing a red marble first and then a blue marble?

Accepted Answer

4/9 * 3/8

Answer

4/9 * 1/8

Answer

1/9 * 3/8

Answer

1/9 * 1/8

Question 14

Rolling a fair die, what is the probability of getting a multiple of 3?

Accepted Answer

1/3

Answer

1/2

Answer

1/4

Answer

1/6

Question 15

A spinner has 8 equally sized sections, numbered from 1 to 8. What is the probability of spinning an odd number or a number divisible by 4?

Accepted Answer

3/4

Answer

1/2

Answer

1/4

Answer

1/8

Question 16

A survey of 100 students showed 60% liked pizza. What's the chance that a student picked at random from this group likes pizza?

Accepted Answer

0.6

Answer

0.3

Answer

0.7

Answer

0.9

Question 17

What are the possible outcomes when rolling a standard six-sided die?

Accepted Answer

1, 2, 3, 4, 5, 6

Answer

0.5, 1, 1.5, 2, 2.5, 3

Answer

Red, Blue, Green, Yellow, Orange, Purple

Answer

Heads, Tails

Question 18

What is the probability of rolling an even number on a standard six-sided die?

Accepted Answer

1/2

Answer

1/3

Answer

1/4

Answer

1/6

Question 19

Which of the following is NOT a feature of a probability distribution?

Accepted Answer

The probability of an event can be greater than 1.

Answer

The sum of probabilities of all outcomes is 1.

Answer

All probabilities are positive.

Answer

Each outcome has a probability between 0 and 1.

Question 20

A coin is flipped 5 times. What is the probability of getting exactly 3 heads?

Accepted Answer

5/32

Answer

1/16

Answer

1/8

Answer

1/4

Question 21

Which formula represents the probability of an event?

Accepted Answer

Number of favorable outcomes divided by the total number of possible outcomes

Answer

Flip a coin and see if it lands on heads

Answer

Guess based on your intuition

Answer

Conduct an experiment and record the results

Question 22

A bag contains 5 red marbles, 3 blue marbles, and 2 yellow marbles. What is the probability of drawing a blue marble?

Accepted Answer

3/10

Answer

1/5

Answer

1/2

Answer

2/5

Question 23

What is the sample space for rolling a dice?

Accepted Answer

{1, 2, 3, 4, 5, 6}

Answer

{1, 2, 3}

Answer

{1, 3, 5}

Answer

{2, 4, 6}

Question 24

Can the probability of an event be greater than 1?

Accepted Answer

No

Answer

Yes

Question 25

Two coins are flipped. What is the probability of getting both tails?

Accepted Answer

1/16

Answer

1/4

Answer

1/2

Answer

1/8

Question 26

A survey of 100 students showed that 60% of them liked pizza. What is the probability that a randomly selected student likes pizza?

Accepted Answer

0.6

Answer

0.3

Answer

0.4

Answer

0.7

Question 27

Which is not a type of probability distribution?

Accepted Answer

Poisson distribution

Answer

Binomial distribution

Answer

Normal distribution

Answer

Uniform distribution

Question 28

A coin is flipped twice. What is the probability that the first flip lands on heads and the second flip lands on tails?

Accepted Answer

1 out of 4

Answer

1 out of 2

Answer

3 out of 4

Answer

1

Question 29

Which of the following is NOT a property of probability?

Accepted Answer

Probability can be negative

Answer

Probability must be between 0 and 1

Answer

The sum of probabilities for all outcomes is 1

Answer

Probability is expressed as a decimal

Question 30

A fair coin is tossed three times. What is the probability of obtaining heads all three times?

Accepted Answer

1/16

Answer

1/2

Answer

1/4

Answer

1/8

Question 31

A spinner has 8 equal sections, numbered from 1 to 8. What is the probability of spinning a number greater than 4?

Accepted Answer

3/8

Answer

1/2

Answer

1/4

Answer

1/8

Question 32

A company surveys 200 customers and finds that 120 prefer product X. What is the probability that a randomly selected customer from the survey prefers product X?

Accepted Answer

0.6

Answer

0.5

Answer

0.4

Answer

0.3

Question 33

A survey of 100 seventh graders shows that 60% of them play video games. What is the estimated number of seventh graders in the survey who play video games?

Accepted Answer

80

Answer

40

Answer

60

Answer

100

Question 34

Which of the following represents the probability of an event that is impossible to occur?

Accepted Answer

0

Answer

1

Answer

0.5

Answer

2

Question 35

A box contains 2 red marbles, 3 blue marbles, and 1 green marble. If two marbles are drawn from the box at random with replacement, what is the probability that at least one of the marbles is blue?

Accepted Answer

1/2

Answer

1/9

Answer

1/6

Answer

1/3

Question 36

When flipping a coin, what is the probability of getting a tail?

Accepted Answer

1/2

Answer

1/3

Answer

1/4

Answer

0

Question 37

A spinner is divided into 8 equal sections, with 2 blue sections. What is the probability of the spinner landing on a non-blue section?

Accepted Answer

6/8

Answer

7/8

Answer

2/8

Answer

5/8

Question 38

Which of the following is NOT a characteristic of probability?

Accepted Answer

Probability can be greater than 1.

Answer

Probability is used to predict the likelihood of an event.

Answer

The sum of probabilities of all outcomes is 1.

Answer

Probability is a number between 0 and 1.

Question 39

A coin is flipped twice. What is the probability of getting heads on both flips?

Accepted Answer

1/4

Answer

1/3

Answer

1/2

Question 40

A box contains 6 blue socks, 4 red socks, and 3 black socks. If a sock is drawn randomly, what is the probability of not drawing a black sock?

Accepted Answer

13/15

Answer

3/15

Answer

5/15

Answer

7/15

Question 41

A bag has 5 red marbles, 3 blue marbles, and 2 green marbles. If you pick one marble without looking, what is the probability of getting a red marble?

Accepted Answer

1/2

Answer

3/10

Answer

1/5

Answer

2/5

Question 42

A spinner has 6 equal sections numbered 1 to 6. What is the chance of *not* landing on a number that's a multiple of 3?

Accepted Answer

2/3

Answer

1/2

Answer

1/3

Answer

3/4

Question 43

Out of 100 people, 60 liked pizza. If you pick one person at random, what's the probability they like pizza?

Accepted Answer

3/5

Answer

1/5

Answer

2/5

Answer

1/2

Question 44

A standard deck of cards has 52 cards. What is the probability of drawing an ace from this deck?

Accepted Answer

1/13

Answer

1/4

Answer

1/52

Answer

1/26

Question 45

A bag has 8 red marbles, 6 blue marbles, and 4 green marbles. You pick 3 marbles without putting them back in. What's the probability of getting all three red marbles?

Accepted Answer

8/18 * 7/17 * 6/16

Answer

4/18 * 6/17 * 8/16

Answer

8/18 * 7/17 * 4/16

Answer

6/18 * 8/17 * 7/16

Question 46

You flip a fair coin 10 times. What's the chance of getting exactly 5 heads?

Accepted Answer

252/1024

Answer

63/1024

Answer

126/1024

Answer

1024/252

Question 47

A survey of 200 people asked their favorite color. 80 said blue, 60 said green, and 40 said yellow. What's the probability of a random person from the survey liking green the best?

Accepted Answer

3/10

Answer

1/2

Answer

1/5

Answer

2/5

Question 48

A bag has 10 balls, numbered 1 to 10. You pick two balls without putting the first one back. What's the chance the numbers on the two balls add up to an even number?

Accepted Answer

1/2

Answer

1/4

Answer

2/3

Answer

1/3