1. Determine whether the following argument is valid or invalid. If it is valid, then you must state the rules of inference used to prove validity, but if it is not then you must provide an example to outline precisely why it is invalid.

(n.b., You do not need quantified predicate logic expressions to complete this problem.) (4 marks) "If I am a student in computer science then I have access to a computer and I enjoy playing computer games. If I have access to the computer labs then I have access to a computer. I have access to the computer labs and I enjoy playing computer games. Therefore, I am a student in computer science."