Paper 1 · Logical Reasoning
UGC NET June 2024 Re-Exam (04.09.2024) Shift-I
Which of the following statements are true about contrary propositions? Choose the correct answer from the options given below.
- 1. They cannot both be true.
- 2. They cannot both be false.
- 3. They can both be false.
- 4. If one is true, then the other must be false.
A2, 3 only
B1, 2, 3 only
C1, 3, 4 only ✓ Correct
D4 only
Correct answer: (C) 1, 3, 4 only — Statements 1, 3 and 4 are true, so that is the answer.
Explanation
★Statements 1, 3 and 4 are true, so that is the answer.
★Contraries cannot both be true.
★But they can both be false.
★If one is true, the other must be false.
★They can both be false, so statement 2 is wrong.
★Hence 1, 3 and 4 only is correct.
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