Statement 1: $(p - q)$ is positive. This is possible only when $p > q$

Statement 2: $(p - r)$ is negative. This is possible only when $p < r$

Now, $(p + q - r) – (p – q + r) = 2q – 2r$ So, we basically need to find out if $q > r$, or not. For this, we obviously have to use both the given statements.

Using both of the statements, we get: $r > p > q$ So, $q < r$

It means that, $(p + q - r) – (p – q + r) = 2q – 2r < 0$ In other words, $(p + q - r)$ is not greater than $(p – q + r)$.