1、打开Excel软件
3、新建一个记事本，将这段函数复制粘贴上去，“=IF(LEN(E4)=0,"空",IF(LEN(E4)租涫疼迟=15,"老号",IF(LEN(E4)<>18,"位数不对",IF(CHOOSE(MOD(SUM(MID(E4,1,1)*7+MID(E4,2,1)*9+MID(E4,3,1)*10+MID(E4,4,1)*5+MID(E4,5,1)*8+MID(E4,6,1)*4+MID(E4,7,1)*2+MID(E4,8,1)*1+MID(E4,9,1)*6+MID(E4,10,1)*3+MID(E4,11,1)*7+MID(E4,12,1)*9+MID(E4,13,1)*10+MID(E4,14,1)*5+MID(E4,15,1)*8+MID(E4,16,1)*4+MID(E4,17,1)*2),11)+1,1,0,"X",9,8,7,6,5,4,3,2)=IF(ISNUMBER(RIGHT(E4,1)*1),RIGHT(E4,1)*1,"X"),"正确","错误"))))”
