Question

here are the factors of 20 and 30.
20: 1, 2, 4, 5, 10, 20
30: 1, 2, 3, 5, 6, 10, 15, 30
what is the greatest common factor?

Explanation:

Step1: Identify common factors

Find the factors that are present in both lists of factors for 20 and 30. The factors of 20 are \(1, 2, 4, 5, 10, 20\) and the factors of 30 are \(1, 2, 3, 5, 6, 10, 15, 30\). The common factors are \(1, 2, 5, 10\).

Step2: Determine the greatest common factor

From the common factors \(1, 2, 5, 10\), the greatest one is \(10\).

Answer:

10