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Question
Find the LCM:
15, 25, 30
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Solution
| 3 | 15 |
| 5 | 5 |
| 1 |
| 5 | 25 |
| 5 | 5 |
| 1 |
| 2 | 30 |
| 3 | 15 |
| 5 | 5 |
| 1 |
15 = 3 × 5
25 = 5 × 5
30 = 2 × 3 × 5
∴ LCM = 5 × 3 × 5 × 2
= 150
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