请问哪位高手做过2,36,31,27,24,（）这条推理题? A、20 B、18 C、22 D、16我的方法是三三分组,分2组.分别是2+36+31=69,27+24+X=69,得出X=18.但我所做的那份试题答案是C.现在很困惑,请求解.
哥们,你这分组显然缺乏说服力,因为只分了2组,一般规律性的东西都得要3个吧?而且我深度怀疑楼主的题目搞错了,开头应该是42吧,然后每两个数的差就是递减的,42-36=6,……5 4 3 2 ,24-2=?自然就是22了.你认为呢?
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扫描下载二维码35+34-33-32+31+30-29-28+27+26-25-24+23+22-21-20怎么计算方便
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