Mathematics 0580 · IGCSE · Probability of combined events

Probability of combined events — practice question

(a(i))[2]

Find the probability that both marbles are red.

(a(ii))[1]

Find the probability that the marbles are not both red.

(b)[4]

Find the probability that he picks a green marble on his first, second or third attempt.

Worked solution & mark scheme

This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$\frac{4}{6}\times\frac{3}{5}$” …