mdcat logical reasoning MCQ #894

If 'No reptiles are mammals' and 'All lizards are reptiles', which conclusion is logically valid?

mdcat logical reasoning MCQ #894

  1. Question 1

    Q1. If 'No reptiles are mammals' and 'All lizards are reptiles', which conclusion is logically valid?

    • A) Some lizards are mammals
    • B) No lizard is a mammal
    • C) All mammals are lizards
    • D) Some reptiles are mammals

    Answer: No lizard is a mammal

    Explanation: B follows by syllogism. A contradicts premises via transitivity. USAT, HAT and MDCAT analytical sections repeat this pattern.