Answer:
4
Explanation:
To find the greatest common factor (GCF) of 4 and 16, we need to determine the largest number that evenly divides both 4 and 16.
We can start by listing the factors of each number:
Factors of 4: 1, 2, 4
Factors of 16: 1, 2, 4, 8, 16
From the list, we can see that both 4 and 16 have the common factor of 4.
Therefore, the GCF of 4 and 16 is 4.