Lemmara logoLemmaraWorked solution

4MA1/1F Jun 2019, Question 4: Basic Probability

Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1F (Foundation) · Calculator · 3 marks

اقرأ هذا الحل مشروحاً بالعربي ←

The question, in short

Use a fair 6-section spinner with colours red, red, green, blue, blue, blue to describe and mark probabilities for landing on green, blue and yellow.

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

Part (a) · 1 mark

Choose from impossible, unlikely, evens, likely, certain the word best describing the chance of landing on green.

  1. 1There are 6 sections: 2 red, 1 green, 3 blue.
  2. 2Only 1 out of 6 sections is green.
  3. 3This is less than half, so it is unlikely.

Answerunlikely

Part (b) · 1 mark

Mark on a probability scale from 0 to 1 the probability of the spinner landing on blue.

  1. 13 out of 6 sections are blue.
  2. 23/6 = 1/2
  3. 3Mark × at 1/2 on the scale.

Answer1/2

Part (c) · 1 mark

Mark on a probability scale from 0 to 1 the probability of the spinner landing on yellow.

  1. 1There are no yellow sections on the spinner.
  2. 2Probability = 0
  3. 3Mark × at 0 on the scale.

Answer0

Stuck on a step? Read the free lesson: Basic Probability

Practise more basic probability questions

Real 4MA1 past-paper questions, marked on your working like the exam, with a worked solution for every part.

Practise free on Lemmara

More past-paper questions on basic probability

Also searched as: 4MA1 1F June 2019 · 4MA1/1F · 4ma1 jun19 1f · question 4.
Lemmara is an independent study tool, not affiliated with or endorsed by Pearson Edexcel. The worked solutions are Lemmara’s own.