1) program z1; var k,i:integer; begin i:=4; k:=0; while i<=20 do begin if i mod 2=0 then begin writeln(i); k:=k+i; end; i:=i+1; end; writeln('сумма ',K) end. 2) program z2; var i,k:integer; begin k:=1; i:=3; repeat if i mod 2 <> 0 then begin writeln(k,')',i); k:=k+1; end; i:=i+1; until k>20; end.