1) var i,n,k:integer; a:array[1..10] of integer;begin for i:=1 to 10 do read(a[i]); writeln; for i:=10 downto 1 do write(a[i],' '); readln; readlnend.3)var i,n,k:integer;a:array[1..10] of integer;begin for i:=1 to 10 do read(a[i]); writeln; writeln((a[5]+a[6])/2:0:2); readln; readlnend.4)var i,n,k,min:integer;a:array[1..10] of integer;begin for i:=1 to 10 do begin read(a[i]); if (a[i] mod 10=4) or (a[i] mod 10=-4) then min:=a[i]; for i:=1 to 10 do if ((a[i] mod 10=4) or (a[i] mod 10=-4)) and (a[i]<min) then min:=a[i]; writeln(min);end.5) var i,n,k,max:integer;a:array[1..10] of integer;begin max:=0; for i:=1 to 10 do begin read(a[i]); if (a[i] mod 5=0) and (a[i]>max) then max:=a[i]; end; writeln(max);end.