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Question
Find the L.C.M. of 72, 80 and 252
Solution
L.C.M. 72, 80, 252
| 2 | 72, | 80, | 252 |
| 2 | 36, | 40, | 126 |
| 2 | 18, | 20, | 63 |
| 3 | 9, | 10, | 63 |
| 3 | 3, | 10, | 21 |
| 1, | 10, | 7 |
= 2 × 2× 2 × 3 × 3 × 10 × 7 = 5040
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