Find the least number of complete years in which a sum of money put out at 25% compound interest will be more than double of itself?
Choose the most appropriate option:
A) 8 years
B) 9 years
C) 6 years
D) 4 years
E) 5 years
4 years   Answer:4 years
<result>D</result>
Find the least number of complete years in which a sum of money put out at 25% compound interest will be more than double of itself?