12,6,18,12,30,( ),34。A.4 B.8 C.10 D.12

12,6,18,12,30,( ),34。A.4 B.8 C.10 D.12

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11,149( ),39,65,100。A.24 B.25 C.27 D.17

11,149( ),39,65,100。A.24 B.25 C.27 D.17

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1,3,3,9,12,36,42,( )。A.56 B.84 C.126 D.160

1,3,3,9,12,36,42,( )。A.56 B.84 C.126 D.160

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