0580/13 May/Jun 2025, Question 20: HCF and LCM
Cambridge IGCSE Mathematics 0580 · Paper 13 (Core) · Non-calculator · 2 marks
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The question, in short
Find the highest common factor of 36 and 54.
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Solution · 2 marks
- 136 = 2 × 2 × 3 × 3
- 254 = 2 × 3 × 3 × 3
- 3HCF = 2 × 3 × 3 = 18
Answer18
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