Probability is one of 9 topics in the Grade 11 Mathematical Literacy CAPS syllabus, covered across 3 lessons on Study Vault. Below are real practice questions from this topic with full worked answers.
Sample practice questions
Easy
1. What value does a probability of 1 represent?
The event is certain to happen
The event is impossible
The event has an equal chance of happening or not happening
A probability value of 1 is never valid
Answer: The event is certain to happen — A probability of 1 means the event is certain to happen; a probability of 0 means the event is impossible.
Easy
2. Calculate the theoretical probability of drawing a heart from a standard 52-card deck (13 hearts), as a fraction in simplest form.
Answer: 1/4 — Theoretical probability = favourable outcomes / total outcomes = 13/52, which simplifies to 1/4.
Medium
3. A weather report shows that, historically, it rained on 45 out of 180 days in a season. What is the relative frequency of rain for this season, as a decimal?
Answer: 0.25 — Relative frequency = number of rainy days / total days = 45/180 = 0.25.
