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Question
Find the HCF of the following numbers:
91, 112, 49.
Solution
| 7 | 91 |
| 13 | 13 |
| 1 |
| 2 | 112 |
| 2 | 56 |
| 2 | 28 |
| 2 | 14 |
| 7 | 7 |
| 1 |
| 7 | 49 |
| 7 | 7 |
| 1 |
91 = 7 × 13
112 = 2 × 2 × 2 × 2 × 7
49 = 7 × 7
HCF = 7
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