Least Common Multiple (LCM) of 38 and 78
The least common multiple (LCM) of 38 and 78 is 1482.
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 38 and 78?
First, calculate the GCD of 38 and 78 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 38 ÷ 78 = 0 remainder 38 |
| 2 | 78 ÷ 38 = 2 remainder 2 |
| 3 | 38 ÷ 2 = 19 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 41 and 138 | 5658 |
| 114 and 114 | 114 |
| 90 and 71 | 6390 |
| 200 and 155 | 6200 |
| 154 and 22 | 154 |