Question
Find Least Common Multiple of 9642 and 6498 using division method..
Answer
LCM( 9642, 6498 ) = 10442286
Explanation
Step 1 : Write the given numbers in a horizontal line.
| 9642 | 6498 |
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 | 9642 | 6498 |
| 4821 | 3249 |
Step 3 : Continue dividing by prime numbers till we get 1 in all columns.
| 2 | 9642 | 6498 |
| 3 | 4821 | 3249 |
| 3 | 1607 | 1083 |
| 19 | 1607 | 361 |
| 19 | 1607 | 19 |
| 1607 | 1607 | 1 |
| 1 | 1 |
Step 4 : Multiply numbers in first column to get LCM.
LCM( 9642, 6498 ) = 2 · 3 · 3 · 19 · 19 · 1607 = 10442286 .
This solution can be visualized using a Venn diagram.
The LCM is equal to the product of all the numbers on the diagram.
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