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Question
Find the HCF set of numbers using prime factorisation method.
18, 24
Solution
18, 24
Prime factorisation of 18 = 2 × 3 × 3
Prime factorisation of 24 = 2 × 2 × 2 × 3
Common factors of 18 and 24 = 2 × 3 = 6
HCF (18, 24) = 6
| 2 | 18 |
| 3 | 9 |
| 3 | 3 |
| 1 |
| 2 | 24 |
| 2 | 12 |
| 2 | 6 |
| 3 | 3 |
| 1 |
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