把自然数前五个数 1.排成1,2,3,4,5; 2.排成5,4,3,2,1; 3.排成3,1,4,2,5; 4.排成2,3,1,4,5 四种情况 问:可以叫做数列的有几个,分别是哪几个?为什么?
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![把自然数前五个数 1.排成1,2,3,4,5; 2.排成5,4,3,2,1; 3.排成3,1,4,2,5; 4.排成2,3,1,4,5 四种情况 问:可以叫做数列的有几个,分别是哪几个?为什么?](/uploads/image/z/14909558-14-8.jpg?t=%E6%8A%8A%E8%87%AA%E7%84%B6%E6%95%B0%E5%89%8D%E4%BA%94%E4%B8%AA%E6%95%B0+1.%E6%8E%92%E6%88%901%2C2%2C3%2C4%2C5%3B+2.%E6%8E%92%E6%88%905%2C4%2C3%2C2%2C1%3B+3.%E6%8E%92%E6%88%903%2C1%2C4%2C2%2C5%3B+4.%E6%8E%92%E6%88%902%2C3%2C1%2C4%2C5+%E5%9B%9B%E7%A7%8D%E6%83%85%E5%86%B5+%E9%97%AE%3A%E5%8F%AF%E4%BB%A5%E5%8F%AB%E5%81%9A%E6%95%B0%E5%88%97%E7%9A%84%E6%9C%89%E5%87%A0%E4%B8%AA%2C%E5%88%86%E5%88%AB%E6%98%AF%E5%93%AA%E5%87%A0%E4%B8%AA%3F%E4%B8%BA%E4%BB%80%E4%B9%88%3F)
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