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Unless Logic Implication

CMAT 2021 · Logical Reasoning · Medium · Logical Deductions

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Select the option that logically follows the main statement: 'Unless I score well, I will not get selected' (1) I was not selected, means I did not score well (2) I am selected, implies I scored well (3) I did not score well, means I will not be selected

  1. A.

    I was not selected, means I did not score well

  2. B.

    I am selected, implies I scored well

  3. C.

    I did not score well, means I will not be selected

  4. D.

    Both (2) and (3)

Answer

D

Explanation

'Unless A, not B' means ¬A  ⟹  ¬B\neg A \implies \neg B (If I don't score well, I won't get selected - Statement 3). Contrapositive: B  ⟹  AB \implies A (If I am selected, I scored well - Statement 2). Both (2) and (3) are correct.

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