Greatest Common Divisor (GCD) of 99 and 175
The greatest common divisor (GCD) of 99 and 175 is 1.
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 99 and 175?
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 | 99 ÷ 175 = 0 remainder 99 |
| 2 | 175 ÷ 99 = 1 remainder 76 |
| 3 | 99 ÷ 76 = 1 remainder 23 |
| 4 | 76 ÷ 23 = 3 remainder 7 |
| 5 | 23 ÷ 7 = 3 remainder 2 |
| 6 | 7 ÷ 2 = 3 remainder 1 |
| 7 | 2 ÷ 1 = 2 remainder 0 |
Examples of GCD Calculations
| Numbers | GCD |
|---|---|
| 148 and 24 | 4 |
| 50 and 180 | 10 |
| 120 and 100 | 20 |
| 39 and 60 | 3 |
| 139 and 190 | 1 |