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"Some teachers are not sincere" is an example of which category of proposition?
1. Universal negative
2. Universal affirmative
3. Particular affirmative
4. Particular negative

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Correct Answer - Option 4 : Particular negative

The correct solution is "Particular Negative"

Argument: a claim supported by premises.
Conclusion: the main claim in an argument
Premises: claims that support an argument's conclusion.
Name Statement Quantity Quality
A All S is P Universal Affirmative
E No S is P Universal Negative
I Some S is P Particular Affirmative
O Some S is not P Particular Negative
 In the above statements, S is the subject and P is the predicate.
  • All S is P is represented by 'A'. Being a positive statement, it is qualified as affirmative and All represents "universal quantity" which means each one.
  • No S is P is represented by 'E'. Being a negative statement is qualified as negative and NO represents "universal quantity".
  • Some S is P, is represented by 'I'. Being a positive statement, it is qualified as affirmative and Some represent "particular quantity".
  • Some S is not P, is represented by 'O'. Being a negative statement containing not in it is qualified as negative and Some Not represents "particular quantity".

 Hence in the above question,  Some teachers are not sincere, the answer becomes "particular negative".

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