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Question
Find the LCM:
4, 12, 20
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Solution
| 2 | 4 |
| 2 | 2 |
| 1 |
| 2 | 12 |
| 2 | 6 |
| 3 | 3 |
| 1 |
| 2 | 20 |
| 2 | 10 |
| 5 | 5 |
| 1 |
4 = 2 × 2
12 = 2 × 2 × 3
20 = 2 × 2 × 5
∴ LCM = 2 × 2 × 3 × 5
= 60
RELATED QUESTIONS
Find the LCM:
6, 8, 10
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23, 69
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15, 25, 30
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24, 40, 80, 120
In a morning walk, three persons step off together. Their steps measure 80 cm, 85 cm, and 90 cm respectively. What is the minimum distance each should walk so that all can cover the same distance in complete steps?
Determine the smallest 3-digit number which is exactly divisible by 6, 8, and 12.
Find first three common multiples of the given number.
12, 9
Find L.C.M of the given number.
16 and 24
Find the least number which when divided by 6, 15 and 18 leave the remainder of 5 in each case.
Find the LCM of the following numbers:
- 9 and 4
- 12 and 5
- 6 and 5
- 15 and 4
Observe a common property in the obtained LCMs. Is LCM the product of two numbers in each case?
