Question

find the greatest common factor (gcf). 77 and 55

Explanation:

Step1: Factorize 77

Find the factors of 77: \(77 = 7\times11\)

Step2: Factorize 55

Find the factors of 55: \(55 = 5\times11\)

Step3: Identify common factors

The common factor of 77 and 55 is 11. Since it's the only common factor greater than 1, it's the GCF.

Answer:

11