共有81个算式(包括负数结果):
0*10-1=-1,0*20-2=-2,0*30-3=-3,0*40-4=-4,0*50-5=-5,0*60-6=-6,0*70-7=-7
0*80-8=-8,0*90-9=-9,1*21-2=19,1*31-3=28,1*41-4=37,1*51-5=46,1*61-6=55
1*71-7=64,1*81-8=73,1*91-9=82,2*12-1=23,2*32-3=61,2*42-4=80,2*52-5=99
2*62-6=118,2*72-7=137,2*82-8=156,2*92-9=175,3*13-1=38,3*23-2=67,3*43-4=125
3*53-5=154,3*63-6=183,3*73-7=212,3*83-8=241,3*93-9=270,4*14-1=55,4*24-2=94
4*34-3=133,4*54-5=211,4*64-6=250,4*74-7=289,4*84-8=328,4*94-9=367,5*15-1=74
5*25-2=123,5*35-3=172,5*45-4=221,5*65-6=319,5*75-7=368,5*85-8=417,5*95-9=466
6*16-1=95,6*26-2=154,6*36-3=213,6*46-4=272,6*56-5=331,6*76-7=449,6*86-8=508
6*96-9=567,7*17-1=118,7*27-2=187,7*37-3=256,7*47-4=325,7*57-5=394,7*67-6=463
7*87-8=601,7*97-9=670,8*18-1=143,8*28-2=222,8*38-3=301,8*48-4=380,8*58-5=459
8*68-6=538,8*78-7=617,8*98-9=775,9*19-1=170,9*29-2=259,9*39-3=348,9*49-4=437
9*59-5=526,9*69-6=615,9*79-7=704,9*89-8=793
出错题了吧
没出错题吗
=所有整数?
是不是答案不唯一?