Types of error

If you write a program that compiles and executes, it must not have any
  1. Syntax errors
  2. Logical errors
  3. Runtime errors
  4. All of the above (1-3) because if it compiled and executed, it has no errors.
  5. Two of the above (1-3)
Explain your answer.

I wrote a payroll program that seemed to work fine, but when I checked some sample results using a calculator, I discovered that it was giving the wrong result. What type of error had I made? Explain your answer.

Which type error does this message display program have? Explain your answer.

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