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1、510152025303540455055606570758085909510014374263967851015202530354045505560657075808590951001414373742426363787896961015151414161615151 115151 11919212120201 120201 12020你能发现你能发现什么？什么？18181 =1 =18181 =1 =1717191918181717191917和和19是是18的相邻数。的相邻数。37371 1 = =37371 1 = =50501 1 = =50501 1 = =363638384949
2、515160607070636363 63 = 70= 707 72525 = 30= 303636 = 40= 404949 = 50= 506464 = 70= 708181 = 90= 909898 = 100= 1005 51 19 94 46 62 260606363707063 63 = 60= 603 32121 = 20= 203333 = 30= 304848 = 40= 407777 = 70= 705656 = 50= 509494 = 90= 901 14 48 87 76 63 324242020303024244 424246 6555550506060686860
3、60707083838080909055555 568688 883833 355555 568682 283837 717173 =3 = 7 73 =3 =37373 =3 =101020204040 4 46 =6 =44446 =6 =24246 =6 =38382 =2 =58582 =2 = 8 82 =2 =1010303050501010404060606 6 = 10= 104949 = 40= 409292 = 90= 907373 = 80= 808686 = = 100100 = = 2525 = = 3 3 = = 4 49 97 72 2101030307070202059591 130301 110010010109999 1 186864 45252 8 82525 5 566666 64040 2 24646 1 179791 11515 5 5808020208585 = 100= 1004949 = 40= 40
