medium · LSAT Logical Reasoning
No one who is tired can concentrate. Peter is not tired. Therefore, Peter can concentrate.
Which of the following correctly evaluates this reasoning?
- Invalid, because it affirms the consequent.
- Valid modus ponens.
- Invalid, because it negates the triggering condition and infers the absence of the stated barrier.
- Valid modus tollens.
- Invalid, because no statement about tiredness can bear on concentration at all.
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More LSAT Logical Reasoning practice
- Which one of the following is an assumption required by the argument?
- Which one of the following can be properly inferred from the statements above?
- The question type just described is best identified as which one of the following?
- The reasoning in the argument is flawed in that the argument
- The reasoning in the argument is flawed because the argument
- Which one of the following most accurately describes the relationship the statement establ
- Which one of the following can be validly inferred from the two conditionals above?
- Which one of the following must be true given the statement above?