Paper 1 · Logical Reasoning
UGC NET June 2024 Re-Exam (30.08.2024) Shift-II
Which of the following statements are true? Choose the correct answer from the options given below.
- 1. Propositions or statements can be true or false.
- 2. Propositions can be valid or invalid.
- 3. A valid argument must contain only true premises.
- 4. A valid argument must have a true conclusion.
- 5. In a valid argument, if its premises are true, then the conclusion cannot be false.
A1, 5 only ✓ Correct
B3, 4, 5 only
C4, 5 only
D1, 2, 3, 4 only
Correct answer: (A) 1, 5 only — Statements 1 and 5 are true, so that is the answer.
Explanation
★Statements 1 and 5 are true, so that is the answer.
★Propositions carry truth values, so they can be true or false.
★Validity belongs to arguments, not propositions, so statement 2 is false.
★A valid argument can have false premises, so statement 3 is false.
★A valid argument need not have a true conclusion, but if its premises are true the conclusion cannot be false.
★Hence 1 and 5 is correct.
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