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Question
LCM of 10, 15 and 20 is ______.
Options
30
60
90
180
Solution
LCM of 10, 15 and 20 is 60.
Explanation:
We have,
2 |
10, 15, 20 |
2 |
5, 15, 10 |
3 |
5, 15, 5 |
5 |
5, 5, 5 |
1, 1, 1 |
The LCM of 10, 15 and 20 is 2 × 2 × 3 × 5 = 60
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