( ) 7 8 10 13 17 22 28
( ) 7 8 10 13 17 22 28
找规律填数.(),7,8,10,13,17,22,28 2,4,()8,6,(),8,16,10,20 1,4,13,4
1+2+4+5+7+8+10+11+13+14+16+17+19+20+22#23+25+26+28+29(求简便算式)
找规律:7,8,12,18,17,28,22,38,( ),( )
找规律填数:1、35 28 22 17( ) 10 () 7 2、1 2 5 4 9 8( )( ) 17 32
3,4,5,6,7,8,11,12,13,14,15,16,17,18,21,22,23,24,25,26,27,28,
8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28
数字推理28 27 39 43 10 7 25 17 10 7 13,
2,7,12,17,22,( ),( ), / 2,3,5,8,13,( ),( ) / 2,3,5,( ),12,17
将自然数按如下顺序排列:1 2 6 7 15 16 28 3 5 8 14 17 23 4 9 13 10 10 12…
2+3+4+5+7+8+9+10+12+13+14+15+17+18+19+20+22+23+24+25+27+.+10
三角函数 (10 22:7:13)