Practice — what type is this question? (Probability)
Read each question and decide what type it is before revealing the answer.
Grade 10Paper 1Level 1 — Knowledge
8.2 A bag contains 3 blue balls and x yellow balls. 8.2.1 Write down the total number of balls in the bag. 8.2.2 If a ball is drawn from the bag, write down the probability that it is blue.
Source: DBE Mathematics Paper 1, Grade 10, November 2016, Question 8.2
Grade 10Paper 1Level 3 — Complex Procedures
In a random physical sciences experiment, A and B are two different events. It was found that: P(A) = 2/5, P(B') = 3/8 and P(A or B) = 5/7 8.1.1 Calculate: (a) P(B) (b) P(A and B) 8.1.2 Hence, determine whether events A and B are mutually exclusive. Motivate your answer.
Source: DBE Mathematics Paper 1, Grade 10, November 2018, Question 8.1
Grade 10Paper 1Level 1 — Knowledge
In a random physical sciences experiment, A and B are two different events. It was found that P(B') = 3/8. Calculate P(B).
Source: DBE Mathematics Paper 1, Grade 10, November 2018, Question 8.1.1(a)