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Question
Find the HCF of the following numbers:
70, 105, 175
Solution
| 2 | 70 |
| 5 | 35 |
| 7 | 7 |
| 1 |
| 3 | 105 |
| 5 | 35 |
| 7 | 7 |
| 1 |
| 5 | 175 |
| 5 | 35 |
| 7 | 7 |
| 1 |
70 = 2 × 5 × 7
105 = 3 × 5 × 7
175 = 5 × 5 × 7
HCF = 5 × 7 = 35
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