31. If two propositions can be true, but can not both be false together, their relation is
32. Consider the following statements.
1. All valid arguments contain only true premises and a true conclusion.
2. Some valid arguments contain only false propositions - false premises and a true conclusion.
3. All valid arguments contain only false propositions all premises are false, conclusion is false as well.
Which of the above statements is correct?
1. All valid arguments contain only true premises and a true conclusion.
2. Some valid arguments contain only false propositions - false premises and a true conclusion.
3. All valid arguments contain only false propositions all premises are false, conclusion is false as well.
Which of the above statements is correct?
33. The denotation of a term is
34. In which one of the following cases an argument can be invalid?
35. Identify which type of argument is this
All men are mortal
Socrates is a man
∴ Socrates is mortal
All men are mortal
Socrates is a man
∴ Socrates is mortal
36. Women always are delicate', the standard logical form of this proposition will be
37. Which two laws are regarded as tautology?
38. In elementary logic, truth is related to what?
39. According to 'opposition of propositions' if 'summer days are generally hot' is true, the propositions "All summer days are hot" will be
40. Which two set have some notion in quality?
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