There are 12 discs in a box. 6 discs are red. 5 discs are blue. 1 disc is white. One disc is picked at random from the box.
On the probability scale mark with a cross (X) the probability that the disc is red.

On the probability scale mark with a cross (X) the probability that the disc is green.
Write down the probability that the disc is blue.
84 exam-style questions on Edexcel GCSE Maths Probability. Each one has a worked solution and a mark scheme showing where the marks go.