找规律填数A.20 20 10 B18 16 8 C 25 ( ) ( )
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找规律填数A.20 20 10 B18 16 8 C 25 ( ) ( )
找规律填数A.20 20 10 B18 16 8 C 25 ( ) ( )
找规律填数A.20 20 10 B18 16 8 C 25 ( ) ( )
A.20 20 10
B18 16 8
C 25 (x) (x/2)
由题知,x可能为30,即(20-25):(20-x)=(20-18):(20-16)
即25,30,15;