Answer :

luana
[tex]Greatest\ common\ factor\ is\ the\ highest\ number\ by\ witch\ 10\ and\ 12\\can\ be\ divided\\\\ 10:2\\ 5:5\\\\ 12:2\\ 6:2\\ 3:3\\\\GCF=2\\\\Greatest\ common\ factor\ of\ 10\ and\ 12\ is\ equal\ to\ 2. [/tex]