World Inventor's Day is celebrated on _____________?
Correct answer: A. 9th November
- A. 9th November
- B. 8th April
- C. 31st April
- D. 23rd April
Explanation
In the calendar commonly used by Pakistani general-knowledge references, World Inventors’ Day is observed on 9 November. The other dates listed either have different observances or include the invalid date 31 April.
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