4024/12 May/Jun 2024, Question 6: Number Review: Mixed Practice
Cambridge O Level Mathematics 4024 · Paper 12 (Non-calculator) · Non-calculator · 2 marks
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The question, in short
Complete a missing digit card so the two-digit number ending in 3 is not prime, and give an example disproving a claim about sums of multiples of 3.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Part (a) · 1 mark
Fill the blank card so the resulting two-digit number ending in 3 is not a prime number.
- 133 = 3 × 11, so 33 is not prime (63 or 93 also work)
Answer33 or 63 or 93
Part (b) · 1 mark
Provide an example showing that adding two multiples of 3 does not always give a multiple of 6.
- 16 and 9 are both multiples of 3
- 26 + 9 = 15
- 315 is not a multiple of 6, so Mei is wrong
AnswerCorrect example showing sum and result e.g. 6 + 9 = 15
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Also searched as: 4024/12/M/J/24 · 4024_s24_qp_12 · 4024 s24 12 · question 6.
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