找规律填数:12,15,17,30,22,45,( ),( )…… ……

2025-07-09 15:31:51
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回答1:

12,15,17,30,22,45,(60 ),(27 )……双重数列,奇数项12,17,22,27.是公差为5的等差数列偶数列15,30,45,60.是是公差为15的等差数列