Question

Greatest Common Factor or Greatest Common Divisor (GCD) of two or more numbers is the (largest/smallest) number that divides evenly into each of the given numbers.

Answer 1

Greatest Common Factor or Greatest Common Divisor (GCD) of two or more numbers is the largest number that divides evenly into each of the given numbers.

For example,
$12=3\times 4$
$16=4\times 4$

The largest number that divides $12$ and $16$ evenly is $4$.
$\therefore$ GCD is $4.$