找规律12,7,4.5,3.25,( ),( )(1)12,7,4.5,3.25,( ),( )(2)2.4,4.6.9,17.8,( ),( )(3)35,10,5,4,( ),( )

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找规律12,7,4.5,3.25,( ),( )(1)12,7,4.5,3.25,( ),( )(2)2.4,4.6.9,17.8,( ),( )(3)35,10,5,4,( ),( )
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找规律12,7,4.5,3.25,( ),( )(1)12,7,4.5,3.25,( ),( )(2)2.4,4.6.9,17.8,( ),( )(3)35,10,5,4,( ),( )
找规律12,7,4.5,3.25,( ),( )
(1)12,7,4.5,3.25,( ),( )
(2)2.4,4.6.9,17.8,( ),( )
(3)35,10,5,4,( ),( )

找规律12,7,4.5,3.25,( ),( )(1)12,7,4.5,3.25,( ),( )(2)2.4,4.6.9,17.8,( ),( )(3)35,10,5,4,( ),( )
12,7,4.5,3.25,2.625,2.3125(规律:前面数加2再除2)
2.4,4.6,9,17.8,35.4,70.6(规律:前面数乘2再件0.2)
35,10,5,4,3.8,3.76( 差值以5的次方递减)

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