13、31、24、42、35、53、( )、( )、57、75.
12,13,14,15,21,23,24,25,31,32,34,35,41,42,43,45,51,52,53,54
11,13,15,17,19,31,33,35,37,39,51,53,55,57,59,71,77,79,91,93,
(1)0,7,8,12,879(2)8,16,24,27,323)13,19,31,57,414)36,25,9,35,
98版五笔字根表:42 52 13 23 33 43 53 14 24 34 44 54 15 25 35 45 55
3/2+7/6+13/12-21/20+31/30-43/42+57/56+73/72
27+29+31+33+35+37+39+41+43+45+47+49+51+53+55+57=()*()=672
12,13,15,21,23,25,31,32,35,51,52,53里哪些是质数
35 24 57 46 18 69 74 80 92 31 15 54 的下六个数,
7/6+13/12+21/20+31/30+43/42+57/56 7/6+13/12+21/20+31/30+43/4
7/6 + 13/12 +21/20+31/30+43/42+57/56+73/72+91/90 简便计算
7/6+13/12+21/20+30/31+42/43+57/56+73/72+91/90=?
找规律进行简便计算7/6 + 13/12 + 21/21 + 31/30 + 43/42 + 57/56 + 73/72