观察下面三行数①-2,4,-8,16,-32···②1,7,-5,19,-29···③-4,2,-10,14,-34··
观察下面三行数①-2,4,-8,16,-32···②1,7,-5,19,-29···③-4,2,-10,14,-34··
观察下面三行数:①2,-4,8,-16,···②-1,2,-4,8···③3,-3,9,-15···
观察下面三行数:2,-4,8,-16,32,-64,...;① 4,-2,10,-14,34,-62...;②
观察下面三行数2 -4 8 -16 32 -64,...:①4 -2 10 -14 34 -62,.:②1 -2 4 -
观察下面三行数:①-2,4,-8,16,-32,64……
观察下面三行数 ,第一行:1,4.9,16,25..,第二行:0,3,8,15,24...第三行:4,7,12,19,2
观察下面三行数:①2,-4,8,-16,32,-64.②0,-6,6,-18,30,-66.③-1/2,1,-2,4,-
观察下面三行数 -2 4 -8 16 -32 64 -4 2 -10 14 -34 62 +1 -2 +4 -8 +16
急!观察下面三行数: ①2,-4,8,-16,32,-64... ②0,-6,6,-18,30,-66... ③-1/2
观察下面三行数① 2,-4,8,-16,32,-64…;② 3,-3,9,-15,33,-63,…;③1,
观察下面三行数 (1),2,-4,8,-16,32,-64.(2) 4,-2,10,-14,34,-62...(3)1,
观察下面三行数: 第一列2,-4,8,-16,32,-64 第二列4,-2,10,-14,34,-62 第三列1,-2,