Answer:
We found the factors and prime factorization of 55 and 65. The biggest common factor number is the GCF number. So the greatest common factor 55 and 65 is 5.
Answer:
5
Step-by-step explanation:
Since we are asked to find the greatest common factor, our best choice would first be to find the prime factorization of [tex]$65$[/tex] and [tex]$55$[/tex].
[tex]$65 = 5\cdot13.$[/tex]
[tex]$55 = 5\cdot11$[/tex]
From this, we can conclude that the greatest common factor is [tex]\boxed{5}[/tex].
