Least Common Multiple (LCM) of 25 and 49
The least common multiple (LCM) of 25 and 49 is 1225.
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 25 and 49?
First, calculate the GCD of 25 and 49 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 25 ÷ 49 = 0 remainder 25 |
| 2 | 49 ÷ 25 = 1 remainder 24 |
| 3 | 25 ÷ 24 = 1 remainder 1 |
| 4 | 24 ÷ 1 = 24 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 26 and 75 | 1950 |
| 164 and 121 | 19844 |
| 126 and 55 | 6930 |
| 179 and 130 | 23270 |
| 79 and 83 | 6557 |