1、计算1.875+3.875+5.875+……+ 77.875 + 79.875 = .2、111…111222…222÷333…333=( )2010个1 2010个2 2010个33、一年青人今年(2010年)的岁数正好等于出生年份数字之和,那么这位年青人今年的岁 是 .4、计

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