Let $pp$ , $qq$ and $rr$ be 2-digit numbers where $p < q < r$ . If $pp + qq + rr = tt0$ , where $tt0$ is a 3-digit number ending with zero, consider the following statements :

1. The number of possible values of $p$ is 5.
2. The number of possible values of $q$ is 6.

Which of the above statements is/are correct ?