Ответ:

Объяснение:

program Randomizer;

const

  RndLimit = 10000;

var

  x, SumX : integer;

begin

SumX := 0;

Repeat x := Random(RndLimit) until x > 999;

writeln ('Random X= ', x);

SumX := SumX + (x div 1000) + (x mod 1000 div 100) + (x mod 1000 mod 100 div 10) + (x mod 1000 mod 100 mod 10);

writeln ('Sum = ', SumX);

end.

============== запускаем===================

Free Pascal Compiler version 2.6.2-8 [2014/01/22] for x86_64

Copyright (c) 1993-2012 by Florian Klaempfl and others

Target OS: Linux for x86-64

Compiling main.pas      

Linking a.out            

21 lines compiled, 0.1 sec

Random X= 5488            

Sum = 25