Least common multiple (LCM)
We think you wrote:
lcm20,48,72
This solution deals with the least common multiple (LCM).
Solution found
720
- Alternative approach
Step by Step Solution
Least Common Multiple is :
720Calculate Least Common Multiple for :
20, 48 and 72
Factorize of the above numbers :
20 = 22 • 5
48 = 24 • 3
72 = 23 • 32
Build a prime factors table
| Prime Factor | Number 20 | Number 48 | Number 72 | L.C.M (max) |
|---|---|---|---|---|
| 2 | 2 | 4 | 3 | 4 |
| 3 | 0 | 1 | 2 | 2 |
| 5 | 1 | 0 | 0 | 1 |
LCM = 24 • 32 • 5
Least Common Multiple is :
720Why learn this
