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Question
Find the LCM:
18, 42, 48
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Solution
| 2 | 18 |
| 3 | 9 |
| 3 | 3 |
| 1 |
| 2 | 42 |
| 3 | 21 |
| 7 | 7 |
| 1 |
| 2 | 48 |
| 2 | 24 |
| 2 | 12 |
| 2 | 6 |
| 3 | 3 |
| 1 |
18 = 2 × 3 × 3
42 = 2 × 3 × 7
48 = 2 × 2 × 2 × 2 × 3
∴ LCM = 2 × 3 × 3 × 7 × 2 × 2 × 2
= 1008
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