Determine whether the following statements are true or false. Enter "T" for true and "F" for false.
1.
Every real number is a complex number.
2.
The real part of the complex number is .
3.
The sum of two pure imaginary numbers is always a pure imaginary number.
4.
The sum of two complex numbers is always a complex number.
In order to get credit for this problem all answers must be correct.