The least number of complete years in which a sum of money put out at 20% compound interest will be more than doubled is	Options.
A) 4 years	B) 5 years	C) 6 years	D) 7 years	E) 8 years
Explanation:   4 yearss per question we need something like following   P(1+R/100)n&gt;2P   (1+20/100)n&gt;2   (6/5)n&gt;2   6/5×6/5×6/5×6/5&gt;2   So answer is 4 years   Option 4 years
<result>A</result>
The least number of complete years in which a sum of money put out at 20% compound interest will be more than doubled is