program randstring;vara:array[1..3] of char; i:integer;beginwhile i < 3 do begini+=1;a[i]:=rand();write(a[i]:3);end;end. programm r;varn:integer;beginread(n);write(random(n));end. сложный вариант programm r;vara:array[1..1000]of integer;i,m,n:integer;beginread(n,m);i:=n;while i < m do begini+=1;a[i-n]:=i-n;end;i:=random(m-n)+1;write(a[i])end. while i < 3 do begini+=1;writeln(random(90)+10)end;