What is the greatest common factor of 38, 79 and 19?

The greatest common factor (GCF) is the largest number that can evenly divide a set of numbers. Here are the steps to find the GCF of 38, 79, and 19:

Step 1: Find the factors of each number.

• The factors of 38 are: 1, 2, 19, 38
• The factors of 79 are: 1, 79
• The factors of 19 are: 1, 19

Step 2: Identify the common factors.

• The common factors of 38, 79, and 19 are: 1, 19

Step 3: The greatest of these is 19.

So, the greatest common factor of 38, 79, and 19 is 19.