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Question
Find the HCF set of numbers using prime factorisation method.
51, 85
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Solution
51, 85
Prime factorisation of 51 = 3 × 17
Prime factorisation of 85 = 5 × 17
Common factors of 51 and 85 = 17
HCF (51, 85) = 17
| 3 | 51 |
| 17 | 17 |
| 1 |
| 5 | 85 |
| 17 | 17 |
| 1 |
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