Mathematics 0580 · IGCSE · Probability of combined events

Probability of combined events — practice question

(a(i))[1]

On the probability scale, add an arrow (↓) to indicate the chance that the spinner stops on 2.

(a(ii))[1]

Find the probability that the spinner lands on a prime number.

(a(iii))[1]

Find the probability that the spinner lands on the number 7.

(b)[2]

Find the probability that it is a green ball. Give your answer as a fraction in simplest form.

(c(i))[1]

Find the probability that the score is an even number.

(c(ii))[1]

Find the probability that the score is an integer.

(c(iii))[1]

Find the probability that the score is at least 10.

(d(i))[2]

Complete the tree diagram.

(d(ii))[2]

Work out the probability that both discs she picks are blue.

Worked solution & mark scheme

This 12-mark question has a full step-by-step worked solution and mark scheme. One marking point: Arrow placed at $\frac{1}{6}$

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