0580/11 May/Jun 2025, Question 22: HCF and LCM
Cambridge IGCSE Mathematics 0580 · Paper 11 (Core) · Non-calculator · 3 marks
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The question, in short
Given A = 2³ × 3 and B = 3² × 5, find the HCF and LCM of the two numbers.
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Part (a) · 1 mark
Find the highest common factor of A and B.
- 1Common prime factor: 3
- 2HCF = 3
Answer3
Part (b) · 2 marks
Find the lowest common multiple of A and B.
- 1Highest powers: 2³ × 3² × 5
- 2= 8 × 9 × 5 = 360
Answer360
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Also searched as: 0580/11/M/J/25 · 0580_s25_qp_11 · 0580 s25 11 · question 22.
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