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4MA1/2F Jan 2022, Question 3: Basic Probability

Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2F (Foundation) · Calculator · 3 marks

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The question, in short

Use a fair 8-section spinner with 4 red, 3 green and 1 yellow to judge likelihoods and mark a probability for landing on blue.

Summarised in our own words. Use the official paper for the exact wording and the diagram.

Part (ai) · 1 mark

Choose the word from the box that best describes how likely the spinner is to land on yellow.

  1. 1There is 1 yellow section out of 8.
  2. 2This is a small chance, so the word that best describes it is unlikely.

Answerunlikely

Part (aii) · 1 mark

Choose the word from the box that best describes how likely the spinner is to land on red.

  1. 1There are 4 red sections out of 8.
  2. 24 out of 8 is the same as 1 out of 2, which is an even chance.
  3. 3So the word that best describes it is evens.

Answerevens

Part (b) · 1 mark

On the 0 to 1 probability scale, mark with a cross the probability of the spinner landing on blue.

  1. 1There are no blue sections on the spinner.
  2. 2The probability of landing on blue is 0.
  3. 3Mark a cross at 0 on the probability scale.

Answer0

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