Greatest Common Divisor (GCD) of 70 and 95
The greatest common divisor (GCD) of 70 and 95 is 5.
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 70 and 95?
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 | 70 ÷ 95 = 0 remainder 70 |
| 2 | 95 ÷ 70 = 1 remainder 25 |
| 3 | 70 ÷ 25 = 2 remainder 20 |
| 4 | 25 ÷ 20 = 1 remainder 5 |
| 5 | 20 ÷ 5 = 4 remainder 0 |
Examples of GCD Calculations
| Numbers | GCD |
|---|---|
| 159 and 75 | 3 |
| 176 and 47 | 1 |
| 176 and 112 | 16 |
| 45 and 64 | 1 |
| 184 and 153 | 1 |