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
