Least common multiple (LCM)
We think you wrote:
lcm10,20,45
This solution deals with the least common multiple (LCM).
Solution found
180
- Alternative approach
Step by Step Solution
Least Common Multiple is :
180Calculate Least Common Multiple for :
10, 20 and 45
Factorize of the above numbers :
10 = 2 • 5
20 = 22 • 5
45 = 32 • 5
Build a prime factors table
| Prime Factor | Number 10 | Number 20 | Number 45 | L.C.M (max) |
|---|---|---|---|---|
| 2 | 1 | 2 | 0 | 2 |
| 3 | 0 | 0 | 2 | 2 |
| 5 | 1 | 1 | 1 | 1 |
LCM = 22 • 32 • 5
Least Common Multiple is :
180Why learn this
