... Writeln('*Tong cua hai so ',so1,' va ',so2,' = ',tong); Writeln('*Hieu cua hai so ',so1,' va ',so2,' = ',hieu); Writeln('*Tich ... Writeln('Nam '); Writeln('Quoc '); Writeln('Son '); Writeln('Ha '); Writeln('Nam '); Writeln('De '); Writeln('Cu '); ... Writeln('*Tich cua hai so ',so1,' va ',so2,' = ',tich); Writeln('*Thuong cua hai so ',so1,' va ',so2,' = ',thuong:6:2); Readln End....