Solution - Least common multiple (LCM)
7,980
Step by Step Solution
Least Common Multiple is :
7980Calculate Least Common Multiple for :
19, 20 and 21
Factorize of the above numbers :
19 = 19
20 = 22 • 5
21 = 3 • 7
Build a prime factors table
| Prime Factor | Number 19 | Number 20 | Number 21 | L.C.M (max) |
|---|---|---|---|---|
| 2 | 0 | 2 | 0 | 2 |
| 3 | 0 | 0 | 1 | 1 |
| 5 | 0 | 1 | 0 | 1 |
| 7 | 0 | 0 | 1 | 1 |
| 19 | 1 | 0 | 0 | 1 |
LCM = 22 • 3 • 5 • 7 • 19
Least Common Multiple is :
7980How did we do?
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