7. Data and Probability
Probability Basics — Quiz
Test your understanding of probability basics with 5 practice questions.
Practice Questions
Question 1
A bag contains 3 red, 4 blue, and 5 green marbles. If two marbles are drawn without replacement, what is the probability that both marbles are blue?
Question 2
A fair coin is tossed four times. What is the probability of getting exactly three heads?
Question 3
In a group of 20 students, 12 play soccer, 8 play basketball, and 5 play both. If a student is chosen at random, what is the probability that they play neither soccer nor basketball?
Question 4
A spinner has sections colored red, blue, and green. The probability of landing on red is $ \frac{1}{3} $, and the probability of landing on blue is $ \frac{1}{2} $. What is the probability of landing on green?
Question 5
A card is drawn from a standard deck of 52 cards. What is the probability that the card is a face card (King, Queen, or Jack) or a red card?