Mathematics 0580 · IGCSE · Introduction to probability

Introduction to probability — practice question

Joel uses a fair spinner with five equal sectors labelled 2, 3, 4, 5 and 6.
(a(i))[1]

State the probability that the spinner lands on an odd number.

(a(ii))[1]

State the probability that the spinner lands on a prime number.

(a(iii))[1]

State the probability that the spinner lands on the number 7.

(b(i))[1]

State the mode.

(b(ii))[3]

Calculate the mean.

(b(iii)(a))[1]

Show that the sector angle for the number 2 is $54^{\circ}$.

(b(iii)(b))[2]

Find the sector angle for the number 6.

(c(i))[2]

How many students guessed the number 6?

(c(ii))[3]

Find the percentage of the students who guessed a number less than 5.

(c(iii))[2]

Which number did the spinner land on?

Worked solution & mark scheme

This 17-mark question has a full step-by-step worked solution and mark scheme. One marking point: $\frac{2}{5}$ or an equivalent form (e.g. 0.4, 40\%)

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