math
posted by Jp on .
In simple words, what are the differences of simple interest, compound interest and annuity?

Simple interest pays the same rate every year on only the initial amount invested.
Compound interest pays on the accumulated interest as well as the original investment.
http://www.basicmathematics.com/simplevscompoundinterest.html
An annuity is designed to pay the holder a fixed amount of money in regular payments.
http://www.investopedia.com/terms/a/annuity.asp#axzz2H8vy1uYv 
thanks ms. sue:)

You're welcome, Jp.