Probability GCSE Maths Quiz
Test your knowledge of the Maths Topic: Probability, with this quiz.
This quiz consists of 15 questions, including multiple-choice and short-answer questions on the topic of Probability, for GCSE Maths.
For multiple-choice questions, choose the correct answer. Scroll down to begin the quiz.
Questions
A fair six-sided die is rolled. What is the probability of rolling an even number?
Incorrect
Incorrect
Correct
Incorrect
A bag contains 4 red balls, 5 blue balls, and 1 green ball. If one ball is picked at random, what is the probability it is blue?
Incorrect
Correct
Incorrect
Incorrect
A biased coin lands on heads 70% of the time. If flipped once, what is the probability of getting tails?
Incorrect
Incorrect
Correct
Incorrect
A card is drawn from a standard deck of 52 playing cards. What is the probability of drawing a King?
Incorrect
Incorrect
Correct
Incorrect
Two events are independent if:
Incorrect
Incorrect
Incorrect
Correct
A fair coin is flipped three times. What is the probability of getting exactly two heads?
Possible outcomes: HHT, HTH, THH (3 ways).
Answer: 3/8, or 37.5%
A bag contains 3 green, 2 yellow, and 5 red balls. If one ball is drawn at random, what is the probability it is either green or yellow?
Green or yellow = 3 + 2 = 5 balls
Total balls = 3 + 2 + 5 = 10
Probability = 5/10 = ½ or 50%.
Two dice are rolled. What is the probability that the sum is 7?
Pairs that give 7: (1,6), (2,5), (3,4), (4,3), (5,2), (6,1) → 6 outcomes.
Total outcomes = 6 × 6 = 36.
Probability = 6/36 = 1/6 or or approximately 16.67%.
A class has 30 students, 18 are boys. If one student is chosen at random, what is the probability they are a girl?
Girls = 30 - 18 = 12.
Probability = 12/30 = 2/5 or 40%
The probability of rain on Monday is 0.4 and on Tuesday is 0.6. Assuming independence, what is the probability it rains on both days?
0.4 × 0.6 = 0.24 or 24%.
A biased die has probabilities: P(1) = 0.1, P(2) = 0.2, P(3) = 0.1, P(4) = 0.3, P(5) = 0.2. What is P(6)?
Total probability = 1.
P(6) = 1 - (0.1 + 0.2 + 0.1 + 0.3 + 0.2) = 1 - 0.9 = 0.1 (or 10%).
A bag contains 6 blue and 4 red marbles. Two marbles are drawn at random without replacement. What is the probability both are blue?
First blue: 10/6
Second blue: 5/9
Probability = 10/6 x 5/9 = 30/90 = 1/3 or approximately 33.3%.
A spinner has 8 equal sections numbered 1 to 8. What is the probability of spinning a number greater than 5?
Numbers greater than 5: (6, 7, 8) → 3 numbers
Probability = 3/8 or 37.5%.
A football team wins 60% of its matches. What is the probability that it wins two matches in a row?
0.6 × 0.6 = 0.36 or 36%.
A person plays a game where they have a 25% chance of winning each time. If they play twice, what is the probability that they lose both games?
Probability of losing once = 1 - 0.25 = 0.75.
Probability of losing twice = 0.75 × 0.75 = 0.5625 or 56.25%.
Category
