What is wrong with “Divisible by 4 implies even; 6 is even; so 6 is divisible by 4”?

Exceptive Syllogism: Valid Inferences from Connected and Disjunctive Conditionals

• It affirms the antecedent
• It denies the consequent
• It is a disjunction
• It affirms the consequent to infer the antecedent