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Question
Find the LCM:
18, 36, 27
Solution
| 2 | 18 |
| 3 | 9 |
| 3 | 3 |
| 1 |
| 2 | 36 |
| 2 | 18 |
| 3 | 9 |
| 3 | 3 |
| 1 |
| 3 | 27 |
| 3 | 9 |
| 3 | 3 |
| 1 |
18 = 2 × 3 × 3
36 = 2 × 2 × 3 × 3
27 = 3 × 3 × 3
∴ LCM = 3 × 3 × 2 × 2 × 3
= 18 × 6
= 108
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