Q: A sum triples in ten years under compound interest at a certain rate of interest, the interest is being compounded annually. In how many years, it would become nine times?
(a)20 years
(b)30 years
(c)40 years
(d)50 years
Correct Answer: (a)
The correct answer is (c) '40 वर्ष'. This question from the General Studies domain tests knowledge of Miscellaneous.