Which of the following statements are sub-contraries? A. All sparrows are…
2025
Which of the following statements are sub-contraries?
A. All sparrows are birds. B. No sparrows are birds. C. Some sparrows are birds. D. Some sparrows are not birds.
Choose the correct answer from the options given below:
- A.
C and D Only
- B.
B and D Only
- C.
A and B Only
- D.
B and C Only
Attempted by 14 students.
Show answer & explanation
Correct answer: A
In the traditional Square of Opposition, sub-contraries are two propositions that can both be true but cannot both be false. This relationship exists between the Particular Affirmative (I) and Particular Negative (O) statements. Statement C ('Some sparrows are birds') is an I proposition, and statement D ('Some sparrows are not birds') is an O proposition. Therefore, C and D are sub-contraries.