Least Common Multiple (LCM) of 90 and 196
The least common multiple (LCM) of 90 and 196 is 8820.
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 90 and 196?
First, calculate the GCD of 90 and 196 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 90 ÷ 196 = 0 remainder 90 |
| 2 | 196 ÷ 90 = 2 remainder 16 |
| 3 | 90 ÷ 16 = 5 remainder 10 |
| 4 | 16 ÷ 10 = 1 remainder 6 |
| 5 | 10 ÷ 6 = 1 remainder 4 |
| 6 | 6 ÷ 4 = 1 remainder 2 |
| 7 | 4 ÷ 2 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 69 and 149 | 10281 |
| 90 and 54 | 270 |
| 120 and 168 | 840 |
| 143 and 75 | 10725 |
| 191 and 151 | 28841 |