-1,-2,1,-3,4,-7,11,-18,29,( )找规律填数
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-1,-2,1,-3,4,-7,11,-18,29,( )找规律填数
-1,-2,1,-3,4,-7,11,-18,29,( )找规律填数
-1,-2,1,-3,4,-7,11,-18,29,( )找规律填数
-47
-1-(-2)=1
-2-1=-3
-3-4=-7
4+(-7)=11
........................
中间的数等于前一个数与后一个数的差,括号里是-47
-1,-2,1,-3,4,-7,11,-18,29,(-47 )
-1-(-2)=1
-2-1=-3
-3-4=-7
4-(-7)=11
-7-11=-18
-18-29=-47
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