Free GMAT Practice Question

Let $p$ and $q$ be positive integers and the function $f\left(p,\ q\right)$ is defined as shown:

$f\left(p,\ q\right)=0$, if $p$ < $q$

$f\left(p,\ q\right)=f\left(p-q,\ q\right)+1$, if $p \ge q$

If $f\left(p,\ q\right)=3$, which of the following CANNOT be true?

• $p=7, q=2$
• $p=10, q=3$
• $p=17, q=6$