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4MA1/1FR Jun 2025, Question 2: Basic Probability

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

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The question, in short

Use four numbered cards (1, 2, 4, 5) to describe likelihood of picking 5, mark a probability on a scale, and complete six cards so the chance of an even number is 1/2.

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

Part (a) · 1 mark

Choose the word from impossible, unlikely, evens, likely, certain that best describes the chance of picking the card numbered 5.

  1. 1Only 1 of the 4 cards shows 5
  2. 2P(5) = 1/4, which is less than 1/2
  3. 3so the word is unlikely

Answerunlikely

Part (b) · 1 mark

Place a cross on the 0-to-1 probability scale at the chance of picking a card numbered less than 6.

  1. 1All four numbers 1, 2, 4, 5 are less than 6
  2. 2P(less than 6) = 4/4 = 1
  3. 3Put the cross at 1

AnswerA cross at 1 on the probability scale

Part (c) · 1 mark

Given cards 3, 3, 5, 6 and two blanks, write numbers on the blanks so picking an even number has probability 1/2.

  1. 1P(even) = 1/2, so 3 of the 6 cards are even
  2. 2Only 6 is even so far
  3. 3Both blank cards must be even, e.g. 2 and 4

Answerany two even numbers, e.g. 2, 4

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

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