Casualty Actuarial Society MAS-1 Practice Exam 2026 - Free MAS-1 Practice Questions and Study Guide

In life contingencies notation, the uppercase A_x represents the present value of a life insurance benefit of 1 payable at death (in discrete-time terms, typically paid at the end of the year of death). This means the value is the discounted expected payoff from a unit death benefit, taking into account both the mortality probabilities for someone age x and the time value of money. It’s about a payment that occurs if and when death happens, not a payment made while the person is alive. This distinguishes it from annuity values (which are about payments for life while living) and from other symbols that don’t specifically denote the death benefit’s present value.