Mathematics 0580 · IGCSE · Introduction to probability

Introduction to probability — practice question

A bag contains 6 red balls and 10 blue balls only. On the probability scale, draw an arrow to show the probability that a ball chosen at random is:

(a)[1]

blue in colour.

(b)[1]

red or blue in colour.

Worked solution & mark scheme

This 2-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Show $\frac{5}{8}$ on the probability scale” …