Find Least Common Multiple of 2, 5, 6 and 10 using division method..
Answer
LCM( 2, 5, 6, 10 ) = 30
Explanation
Step 1 : Write the given numbers in a horizontal line.
| 2 | 5 | 6 | 10 |
Step 2 : Divide the given numbers by smallest prime number. In this example we can divide by 2.
(if any number is not divisible by 2, write it down unchanged)
| 2 | 2 | 5 | 6 | 10 |
| 1 | 5 | 3 | 5 |
Step 3 : Continue dividing by prime numbers till we get 1 in all columns.
| 2 | 2 | 5 | 6 | 10 |
| 3 | 1 | 5 | 3 | 5 |
| 5 | 1 | 5 | 1 | 5 |
| 1 | 1 | 1 | 1 |
Step 4 : Multiply numbers in first column to get LCM.
LCM( 2, 5, 6, 10 ) = 2 · 3 · 5 = 30 .
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