如何提取这里面的列表 Mathematica

{{{3,4,5}},{{6,8,10}},{{5,12,13}},{{9,12,15}},{{8,15,17}},{{12,16,20}},{{7,24,25},{15... {{{3, 4, 5}}, {{6, 8, 10}}, {{5, 12, 13}}, {{9, 12, 15}}, {{8, 15,
17}}, {{12, 16, 20}}, {{7, 24, 25}, {15, 20, 25}}, {{10, 24,
26}}, {{20, 21, 29}}, {{18, 24, 30}}}
把里面的{3,4,5},{6,8,10}提取出来
不是这个意思，我是想要把里面的列表都提取出来，诸如{3,4,5},{6,8,10}
用模式匹配展开

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#热议# 为什么说不要把裤子提到肚脐眼？

pencilpine
2012-04-30 · TA获得超过661个赞

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tab={{{3, 4, 5}}, {{6, 8, 10}}, {{5, 12, 13}}, {{9, 12, 15}}, {{8, 15,
17}}, {{12, 16, 20}}, {{7, 24, 25}, {15, 20, 25}}, {{10, 24,
26}}, {{20, 21, 29}}, {{18, 24, 30}}}
tab[[1,1]]
tab[[2,1]]

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不好意思，不是要求这个呢，把里面的每个列表提取出来，成为这样
{{3,4,5}，{6,8,10}，。。。}

追答

这个貌似更简单...
tab = {{{3, 4, 5}}, {{6, 8, 10}}, {{5, 12, 13}}, {{9, 12, 15}}, {{8, 
     15, 17}}, {{12, 16, 20}}, {{7, 24, 25}, {15, 20, 25}}, {{10, 24, 
     26}}, {{20, 21, 29}}, {{18, 24, 30}}};
Flatten[tab, 1]
即可得到:
{{3, 4, 5}, {6, 8, 10}, {5, 12, 13}, {9, 12, 15}, {8, 15, 17}, {12, 
  16, 20}, {7, 24, 25}, {15, 20, 25}, {10, 24, 26}, {20, 21, 29}, {18,
   24, 30}}