Question

What is the greatest common factor of 54,30,78?  pleaseeeeee help lol 

Answer 1

$Greatest\ common\ factor\ is\ the\ highest\ number\ by\ witch\ 54\ and\ 30\\and\ 78\ can\ be\ divided\\\\ 54:2\\ 27:3\\9:3\\3:3\\\\ 30:2\\ 15:3\\ 5:5\\\\78:2\\39:3\\13:13 \\\\GCF=2*3=6\\\\Greatest\ common\ factor\ of\ 54\ and\ 30\ and\ 78\ is\ equal\ to\ 6.$