📐 KSSM · Form 3 · Age 15
Probability
128 exam-format practice questions · Mathematics, Form 3 · Free to start
Lesson overview
This topic introduces students to the mathematical study of chance and uncertainty through the KSSM syllabus. Learners will master calculating probabilities for single events using sample spaces and tree diagrams. They will also explore mutually exclusive events where outcomes cannot occur simultaneously, and independent events where one outcome does not affect another. Additionally, the curriculum covers complementary events, helping students understand that the sum of an event happening and not happening equals one. These skills form the foundation for more complex statistical reasoning required in higher secondary education. Students frequently confuse mutually exclusive events with independent events, leading to incorrect application of addition or multiplication rules during examinations. Many also struggle with interpreting compound events correctly when dealing with replacement versus non-replacement scenarios in probability trees. Mastering these distinctions ensures accuracy in solving multi-step problems and prevents common calculation errors. By overcoming these challenges, students develop logical reasoning skills essential for data analysis. This understanding prepares them for real-world applications involving risk assessment and decision making based on numerical evidence.
Try these questions
Q1. A fair coin is tossed twice. What is the probability of getting exactly one head?
Q2. A bag contains 3 red marbles, 2 blue marbles, and 5 green marbles. A marble is chosen at random. What is the probability that it is not blue?
Q3. A fair die is rolled once. What is the probability of getting a prime number?
Practise all 128 questions on Probability
Instant marking · step-by-step coaching · 5 free sessions a month
Start Free — No Card →No credit card. Upgrade anytime for unlimited sessions.