Mathematics 4024 · O Level · Introduction to probability

Introduction to probability — practice question

A fair spinner numbered from $1$ to $5$ is shown in the diagram. The score is whichever number the spinner stops on.
(a(i))[1]

Work out the probability that the score equals $3$.

(a(ii))[1]

Work out the probability that the score is even.

(b(i))[2]

The spinner is spun two times. Add the two scores together. Fill in the possibility diagram to display every outcome.

(b(ii))[1]

Work out the probability that the outcome is $4$.

(b(iii))[2]

Work out the probability that the outcome is greater than $6$.

Worked solution & mark scheme

This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: $\frac{1}{5}$

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