Solution - Least common multiple (LCM)
420
Step by Step Solution
Least Common Multiple is :
420Calculate Least Common Multiple for :
12, 20 and 28
Factorize of the above numbers :
12 = 22 • 3
20 = 22 • 5
28 = 22 • 7
Build a prime factors table
| Prime Factor | Number 12 | Number 20 | Number 28 | L.C.M (max) |
|---|---|---|---|---|
| 2 | 2 | 2 | 2 | 2 |
| 3 | 1 | 0 | 0 | 1 |
| 5 | 0 | 1 | 0 | 1 |
| 7 | 0 | 0 | 1 | 1 |
LCM = 22 • 3 • 5 • 7
Least Common Multiple is :
420How did we do?
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