Greatest Common Divisor (GCD) of 192 and 72
The greatest common divisor (GCD) of 192 and 72 is 24.
What is the Greatest Common Divisor (GCD)?
The GCD of two integers is the largest positive integer that divides both numbers without leaving a remainder. It is useful in simplifying fractions, finding common factors, and in number theory.
How to Calculate the GCD of 192 and 72?
We use the Euclidean algorithm, which involves the following steps:
- Divide the larger number by the smaller number.
- Replace the larger number with the smaller number and the smaller number with the remainder from the division.
- Repeat this process until the remainder is zero.
- The non-zero remainder just before zero is the GCD.
Step-by-Step Euclidean Algorithm
| Step | Calculation |
|---|---|
| 1 | 192 ÷ 72 = 2 remainder 48 |
| 2 | 72 ÷ 48 = 1 remainder 24 |
| 3 | 48 ÷ 24 = 2 remainder 0 |
Examples of GCD Calculations
| Numbers | GCD |
|---|---|
| 157 and 76 | 1 |
| 138 and 154 | 2 |
| 39 and 105 | 3 |
| 194 and 99 | 1 |
| 14 and 61 | 1 |