0580/33 Oct/Nov 2025, Question 25: HCF and LCM
Cambridge IGCSE Mathematics 0580 · Paper 33 (Core) · Calculator · 2 marks
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The question, in short
Find the lowest common multiple of 20 and 36.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 2 marks
- 120 = 2 × 2 × 5
- 236 = 2 × 2 × 3 × 3
- 3LCM = 2 × 2 × 3 × 3 × 5 = 180
Answer180
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