Mathematics 0580 · IGCSE · Introduction to probability

Introduction to probability — practice question

In the bag of counters, 6 counters are blue. On the probability scale, the arrow (↓) indicates the chance of choosing a blue counter at random. The probability scale runs from 0 to 1, with 0.5 shown at the centre.
(main)[1]

Calculate the total number of counters in the bag.

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme. One marking point: 30

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI