What is the next number in this sequence; 3, 12, 60, 360, . . . ?

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问题 What is the next number in this sequence; 3, 12, 60, 360, . . . ?

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答案2520

解析 (数列后项与前项的商依次是4、5、6,下一项应该是7,故下一个数是2520。)
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