2011-11-08 21:57:38PETER

72 Law

Tell you a very important Law as 72 Law.這Law最能顯現compound interest rate的威力.以年利率做例子.就是用72來除以利率,1%則利息累積到跟本金相同要72年.若為2%是36年其他舉一反三會吧?月利率則以月換年好用吧?