1、标出序列号：找规律的题目，通常按照一定的顺序给出一系列量，要求我们根据这些已知的量找出一般规律。 找出的规律，通常包序列号。 所以，把变量和序列号放在一起加以比较，就 …

9 7 8 6 7 5 ___" ,填6，是两个序列，分别是98765和76543交叉. 9 7 8 6 7 5 （ ），请写出“ （ ） ”处的数字6。 计算经过如下：1、认真观察该数列：9、7 、8 、6 、7 、5 ；2、该数列奇数 …

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2021年1月24日 · 我感觉是7，题中给了8个数，这八个数记为a1、a2...、a8，则有，a(n) + a(9-n) = 14，n=1,2,3,4，比如a1+a8=14，a2+a7=14，a2=7，则a7=7。

3、一般戒指戴于食指、中指或无名指上，大部分女生佩带的戒指号数为9-15号，其中12号、13号的较多（当然，身材较瘦者除外）；大部分男生佩带的戒指号数为17-22号，其中18-20号的较 …

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