What is the greatest common factor of 39 and 65
13 x 3 = 3913 x 5 = 65The GCF is 13
\(39|3 \\13|13 \\ 1 \\\\ 39=3*13 \\\\ 65|5 \\ 13|13 \\1 \\\\ 65=5*13 \\\\ G.C.F(39;65)=13\)