### Instruction: The least number of complete years in which a sum of money put out at 20% C.I. will be more than doubled is?
Answer Choices: (A) 5 (B) 4 (C) 7 (D) 1 (E) 2.### Response: Let's reason about the multi-choice question.
P(1 + 20/100)n > 2P or (6/5)n > 2
Now, (6/5 * 6/5 * 6/5 * 6/5) > 2. So, n
= 4 years.
The answer is B