What is the greatest common factor of 24 60 and 72

Greatest Common Factor - GCF

Factors of 24: 1; 2; 3; 4; 6; 8; 12; 24
Factors of 60: 1; 2; 3; 4; 5; 6; 10; 12; 15; 20; 30; 60
Factors of 72: 1; 2; 3; 4; 6; 8; 9; 12; 18; 23; 24; 36; 72

GCF(24; 60; 72) = 12

other method

24|2    60|2  72|2
12|2     30|2  36|2
  6|2     15|3   18|2
  3|3      5|5     9|3
   1|         1|       3|3
                        1|

GCF(24; 60; 72) = 2 · 2 · 3 = 12