Mathematics 4024 · O Level · Introduction to probability

Introduction to probability — practice question

A bag holds 11 balls. Of these, 5 are blue and 4 are yellow. The remaining balls are green. One ball is selected from the bag at random.
(a)[1]

Determine the probability that the ball is yellow.

(b)[1]

Determine the probability that the ball is not blue.

Worked solution & mark scheme

This 2-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Answer: $\frac{4}{11}$” …

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