Consider the following premises. If it is late, then Michael is not an electrician. If it is late, then it is snowing. If it is late, then it is snowing. If it snows, then it is late. Michael is an electrician. Can we infer the following from them? If we can, name the inference rule being used: It is not snowing.
 From the fact that if it snows, then it is late, and that if it is late, then it is snowing we can infer that it is snowing if and only if it is late via biconditional introduction. From the fact that if it is late, then Michael is not an electrician, and that Michael is an electrician we can infer that it is not late via modus tollens. From the fact that it is snowing if and only if it is late we can infer that if it snows, then it is late via biconditional elimination. From the fact that if it is late, then it is snowing, and that if it snows, then it is late we can infer that it is late if and only if it is snowing via biconditional introduction. Finally, from the fact that it is late if and only if it is snowing, and that it is not late we can infer that it is not snowing via biconditional elimination. Therefore, the answer is yes.