来自刘昌玉的问题
两个等差数列{an}和{bn}的前n项和分别为Sn和Tn,若SnTn=7n+3n+3,则a8b8=______.
两个等差数列{an}和{bn}的前n项和分别为Sn和Tn,若SnTn=7n+3n+3,则a8b8=______.


两个等差数列{an}和{bn}的前n项和分别为Sn和Tn,若SnTn=7n+3n+3,则a8b8=______.
两个等差数列{an}和{bn}的前n项和分别为Sn和Tn,若SnTn=7n+3n+3,则a8b8=______.



∵S

