Mathematics 4024 · O Level · Probability of combined events

Probability of combined events — practice question

Nima is given these six cards. A shape appears on each card. She chooses two cards at random without replacement.

(a)[2]

Complete the tree diagram.

(b)[2]

Find the probability that the shapes on Nima’s two cards are the same. Give your answer as a fraction.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The first branch carries $\frac26$.” …