The year by which a sum of rupees would be 1.21 times of itself at 10% per annum C.Iis June 20, 2021 by admin Question: The year by which a sum of rupees would be 1.21 times of itself at 10% per annum C.Iis A. 2 years B. 3 years C. 3.5 years D. 2.5 years Answer» a. 2 years Note: The above multiple-choice question is for all general and Competitive Exams in India.