The least number of complete years in which a sum of money put out at 20% C.I. will be more than doubled is?	Pick one
A) 7  B) 4  C) 5  D) 3  E) 1
Explanation:   P(1 + 20/100)n &gt; 2P or (6/5)n &gt; 2   Now, (6/5 * 6/5 * 6/5 * 6/5) &gt; 2. So, n = 4 years.   Answer:4
<result>B</result>
The least number of complete years in which a sum of money put out at 20% C.I. will be more than doubled is?