Least Common Multiple (LCM) of 20 and 190
The least common multiple (LCM) of 20 and 190 is 380.
What is the Least Common Multiple (LCM)?
The LCM of two integers is the smallest positive integer that is divisible by both numbers. It is often used to find common denominators and solve problems involving periodic events.
Formula for LCM
The LCM of two numbers can be calculated using their GCD:
LCM(a, b) = |a × b| ÷ GCD(a, b)
How to Calculate the LCM of 20 and 190?
First, calculate the GCD of 20 and 190 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 20 ÷ 190 = 0 remainder 20 |
| 2 | 190 ÷ 20 = 9 remainder 10 |
| 3 | 20 ÷ 10 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 31 and 39 | 1209 |
| 178 and 56 | 4984 |
| 172 and 90 | 7740 |
| 79 and 77 | 6083 |
| 170 and 49 | 8330 |