- #1

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## Homework Statement

P is the probability that a person aged x years will die in a year. Find the probability that out of 5 men A,B,C,D and E, each of x years, A will die in the year and be the first to die.

## Homework Equations

## The Attempt at a Solution

I fixed A in the first place with probability P. Then I made cases of no one dying, one dying, and so on till all dying, which got me : P x (

^{4}C

_{0}P

^{0}(1-P)

^{4}+

^{4}C

_{1}P

^{1}(1-P)

^{3}+

^{4}C

_{2}P

^{2}(1-P)

^{2}+

^{4}C

_{3}P

^{3}(1-P)

^{1}+

^{4}C

_{4}P

^{4}(1-P)

^{0}) which got me P as the answer, which was wrong.