Find GCF and LCM Practice Test

$54=2\cdot 3^3$, $72=2^2\cdot 3^2$, so $\text{GCF}=2^2\cdot 3^2=36$

$54=2\cdot 3^2$, $72=2^3\cdot 3^2$, so $\text{GCF}=2\cdot 3^2=18$

$54=2\cdot 3^3$, $72=2^3\cdot 3^2$, so $\text{GCF}=2^3\cdot 3^3=216$

$54=2\cdot 3^3$, $72=2^3\cdot 3^2$, so $\text{GCF}=2\cdot 3^2=18$