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:
A) 6
B) 4
C) 5
D) 3
E) 1
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?