Find Least Common Multiple of 2, 3, 3 and 5 using ladder method..
Answer
LCM( 2, 3, 3, 5 ) = 30
Explanation
Step 1 : Place the numbers inside division bar:
| 2 | 3 | 3 | 5 |
Step 2 : Find a prime number which can divide at least two of your numbers.
In this example we can divide by 3. If any number is not divisible by 3 write it down unchanged.
| 3 | 2 | 3 | 3 | 5 |
| 2 | 1 | 1 | 5 |
Step 4 : LCM is a product of numbers into L shape.
| 3 | 2 | 3 | 3 | 5 |
| 2 | 1 | 1 | 5 |
LCM = 3 · 2 · 1 · 1 · 5 = 30
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