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(∑8+88+8÷8)×8=1000 首先說一下思路:由1000我們可以想到的算式 10*10*10或者是125*8或者是其他 因為這2種算式和8有些關係 然後去研究一下:10的三次方需要10和3兩個數,6個8是算不出的. 而125乘以8.我們看125需要5個8.想像推斷出的算式便是 ∑8+88+8÷8(這裡∑n表示由1+2+3+…+n)
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