We know several constraints:
By systematically assigning days based on the constraints, the Hindi exam must be conducted on Friday, as it is the only day left that fits all these conditions.
Conclusion: The correct answer is Friday, as it is the only day left for the Hindi exam to fit all conditions





Arun’s present age in years is 40% of Barun’s. In another few years, Arun’s age will be half of Barun’s. By what percentage will Barun’s age increase during this period?