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Ответ:

program Rand1;

var

 A: array [1..5] of Integer;

 i: Integer;

begin

 Randomize;

 for i := Low (A) to High (A) do begin

   A [i] := Random (3) - 1;

   WriteLn (A [i] :3)

 end;

 ReadLn;

end.

program Rand2;

var

 A: array [1..7] of Double;

 i: Integer;

begin

 Randomize;

 for i := Low (A) to High (A) do begin

   A [i] := Random (100001) / 100000 + 3;

   WriteLn (A [i] :8 :2)

 end;

 ReadLn;

end.

program Rand3;

var

 A: array [1..10] of Integer;

 i: Integer;

begin

 Randomize;

 for i := 1 to 10 do begin

   A [i] := Random (21) + 20;

   WriteLn (A [i], ' ');

 end;

 ReadLn;

end.

program Read4;

var

 A: array [1..7] of Integer;

 i: Integer;

begin

 for i := Low (A) to High (A) do begin

   Write ('Введите ', i, ' число: ');

   ReadLn (A [i]);

 end;

 for i := High (A) downto Low (A) do

   Write (A [i], ' ');

 ReadLn;

end.