Exercise 2.
Given below are arguments. Some are valid, some exhibit converse or inverse errors.
Express each argument in symbolic form (define any statement variables you introduce),
identify the rule of inference that guarantees its validity. Otherwise, state whichever of
the converse or inverse error was made.
(a) If John gets good grades, then John gets the internship.
John does not get good grades.
. John does not get the internship.
(b) This apple is Fuji or Honeycrisp
This apple is not Honeycrisp
. This apple is Fuji
(c) If I chill this afternoon, then I won't work out.
If I don't work out, then I won't sleep well tonight.
If I chill this afternoon, then I won't sleep well tonight.
(d) If Nick works diligently on the homework, then Nick will get the right answers.
Nick got the right answers.
Nick worked diligently on the homework.