var ancestorid_131769='131743'; var isauth_131769='0'; var istop_131769='0'; var iselite_131769='0'; var iscommend_131769='0'; var islock_131769='0'; var title_131769='Re:公考行测数字推理六大基本数列及其真题解析'; var body_131769='例题:196,169,144,( ),100

  很明显,这是递减的典型平方数列,答案为125(答案应该是121吧)
例题:11,33,73,( ),231

  解析:各项分别为立方数列加3,6,9,12,15的形式,所以括号内应填137。
(不懂,请具体解释,谢谢)
例题:15.  11   22   33   45   (     )   71
  A.53   B.55  C.57  D.  59

  『解析』 二级等差数列变式。后一项减前一项得到11,11,12,12,14,所以答案为45+12=57。(不懂,请具体解释,谢谢)
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