Description: The purpose of this paper is to present an approach to problems that is general in nature in that it requires neither diagrams no integration - only a clear understanding of basic symbols and concepts involved. Problems involving stationary populations are among the few types of actuarial problems which can be generally handled by appealing only to basic priciples. From Transactions of Society of Actuaries 1969, Vol. 21, Pt. 1, No. 59 AB.