Least common multiple (LCM)
We think you wrote:
lcm12,30,42
This solution deals with the least common multiple (LCM).
Solution found
420
- Alternative approach
Step by Step Solution
Least Common Multiple is :
420Calculate Least Common Multiple for :
12, 30 and 42
Factorize of the above numbers :
12 = 22 • 3
30 = 2 • 3 • 5
42 = 2 • 3 • 7
Build a prime factors table
| Prime Factor | Number 12 | Number 30 | Number 42 | L.C.M (max) |
|---|---|---|---|---|
| 2 | 2 | 1 | 1 | 2 |
| 3 | 1 | 1 | 1 | 1 |
| 5 | 0 | 1 | 0 | 1 |
| 7 | 0 | 0 | 1 | 1 |
LCM = 22 • 3 • 5 • 7
Least Common Multiple is :
420Why learn this
