4. Data & Probability
Probability Basics — Quiz
Test your understanding of probability basics with 5 practice questions.
Practice Questions
Question 1
A bag contains $10$ red balls and $15$ blue balls. If you draw two balls without replacement, what is the probability that the first ball is red and the second ball is blue?
Question 2
In a class of $40$ students, $25$ study Math and $20$ study Science. If $10$ students study both Math and Science, what is the probability that a randomly chosen student studies neither Math nor Science?
Question 3
A coin is flipped and a standard six-sided die is rolled. What is the probability of getting a head on the coin and an even number on the die?
Question 4
Two cards are drawn from a standard deck of $52$ playing cards with replacement. What is the probability that both cards are aces?
Question 5
A spinner is divided into $5$ equal sectors labeled $1, 2, 3, 4, 5. If the spinner is spun twice, what is the probability that the sum of the numbers is $6$?