Find Least Common Multiple of 11, 12, 4 and 2 using prime factorisation method.
Answer
LCM( 11, 12, 4, 2 ) = 132
Explanation
Step 1: Write down factorisation of each number:
11 = 11
12 = 2 · 2 · 3
4 = 2 · 2
2 = 2
Step 2 : Match primes vertically:
| 11 | = | 11 | ||||||
| 12 | = | 2 | · | 2 | · | 3 | ||
| 4 | = | 2 | · | 2 | ||||
| 2 | = | 2 |
Step 3 : Bring down numbers in each column and multiply to get LCM:
| 11 | = | 11 | ||||||||
| 12 | = | 2 | · | 2 | · | 3 | ||||
| 4 | = | 2 | · | 2 | ||||||
| 2 | = | 2 | ||||||||
| LCM | = | 2 | · | 2 | · | 3 | · | 11 | = | 132 |
This page was created using
LCM Calculator