1.观察下列个数,在括号内填入适当的数.-2,-4,0,-2,2,( ) ( )2.观察下列三行数.-3.9,-27,81,-243,729.(第一行数)3分之1,-1,3,-9,27,-81,.(第二行数)-5,7,-29,79,-245,727,.(第三行数)回答下列问题(1
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![1.观察下列个数,在括号内填入适当的数.-2,-4,0,-2,2,( ) ( )2.观察下列三行数.-3.9,-27,81,-243,729.(第一行数)3分之1,-1,3,-9,27,-81,.(第二行数)-5,7,-29,79,-245,727,.(第三行数)回答下列问题(1](/uploads/image/z/3035085-69-5.jpg?t=1.%E8%A7%82%E5%AF%9F%E4%B8%8B%E5%88%97%E4%B8%AA%E6%95%B0%2C%E5%9C%A8%E6%8B%AC%E5%8F%B7%E5%86%85%E5%A1%AB%E5%85%A5%E9%80%82%E5%BD%93%E7%9A%84%E6%95%B0.-2%2C-4%2C0%2C-2%2C2%2C%EF%BC%88+%EF%BC%89+%EF%BC%88+%EF%BC%892.%E8%A7%82%E5%AF%9F%E4%B8%8B%E5%88%97%E4%B8%89%E8%A1%8C%E6%95%B0.-3.9%2C-27%2C81%2C-243%2C729.%EF%BC%88%E7%AC%AC%E4%B8%80%E8%A1%8C%E6%95%B0%EF%BC%893%E5%88%86%E4%B9%8B1%2C-1%2C3%2C-9%2C27%2C-81%2C.%EF%BC%88%E7%AC%AC%E4%BA%8C%E8%A1%8C%E6%95%B0%EF%BC%89-5%2C7%2C-29%2C79%2C-245%2C727%2C.%EF%BC%88%E7%AC%AC%E4%B8%89%E8%A1%8C%E6%95%B0%EF%BC%89%E5%9B%9E%E7%AD%94%E4%B8%8B%E5%88%97%E9%97%AE%E9%A2%98%EF%BC%881)
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