1.对于每个正整数n,数列前n项的平均值是n,则该数列的第2008项是多少?
2.一次掷两枚质地均匀的硬币.每掷到人头向上则掷一次骰子.则骰子点数和为奇数的概率是多少?（若不掷骰子则和为0）
英语翻译1.For each positive integer n,the mean of the first n te
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