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九年义务教育六年制小学数学第10册第138页习题十七是这样一道题: (1)先计算下面各题,然后找出规律: 1/2+1/4+1/8= 1/2+1/4+1/8+1/16= 1/2+1/4+1/8+1/16+1/32= (2)应用上面的规律,直接写出下面式题的得数:
Problem Nineteen is a question: (1) Calculate the following questions first and then find out the law: 1/2 + 1/4 + 1/8 = 1 / 2 + 1/4 + 1/8 + 1/16 = 1/2 + 1/4 + 1/8 + 1/16 + 1/32 = (2) Apply the above rules to write directly the following equation Reciprocal: