mdcat logical reasoning MCQ #416

Given: All X are Y. Some Y are Z. Which conclusion is invalid?

mdcat logical reasoning MCQ #416

  1. Question 1

    Q1. Given: All X are Y. Some Y are Z. Which conclusion is invalid?

    • A) Some X are Z.
    • B) All Z are Y.
    • C) Some Y are X.
    • D) No X are Z.

    Answer: Some X are Z.

    Explanation: Overlap between X and Z isn't guaranteed. Option B is converse of premises.