Question

Which among the following propositions will be the ‘sub-contrary’ of ‘Some celestial bodies are not shining entities’?

• A. All celestial bodies are not shining entities
• B. No celestial bodies are shining entities
• C. Some celestial bodies are shining entities
• D. Some shining entities are celestial bodies

Hint:

For logical relations like sub-contrary, remember the principle: both cannot be false, but both can be true.

Answer 1

The Correct Option is C

In logic, sub-contrary propositions are those where:
- Both cannot be false simultaneously.
- Both can be true.
Given the proposition Some celestial bodies are not shining entities, its sub-contrary will be: Some celestial bodies are shining entities. If the original statement is false (all celestial bodies are shining entities), the sub-contrary must be true. If the original statement is true, the sub-contrary may also be true.