5 Questions packed into one Question

For statements that is correct, type 1. For statements that is incorrect, type 2. For statements that is partially correct, type 3. So the answer is a 5-digit number $$ 1) ${ (50) }_{ 5 }\quad =\quad { (100) }_{ 5 }$ $$ 2) $\int _{ -1 }^{ 1 }{ n } dx\quad =\quad 0$ $$ 3) $123456789$ is divisible by all integers from 1 to 9 $$ 4) The previous answers are a perfect square $$ 5) $\sum _{ x = 1 }^{ n }{ x } \quad =\quad \frac { n\quad (n\quad +\quad 1) }{ 2 }$