1 ,5 , 19 ,49 ,109 ?
A.170 B.180 C.190 D.200
5-1=4^2-12 49-19=6^2-6 x-109=8^2-3 x=170
(1+5)*3+1=19 (1+5)*8+1=49 (1+5)*18+1=109 (1+5)*33+1=199 大概是这样吧
(1+5)*3+1=19 (1+5)*8+1=49 (1+5)18+1=109 (1+5)8+1=199 还没答案?就这个方法
1 ,5 , 19 ,49 ,109 ? A.170 B.180 C.190 D.200 选D
做不出来,等待答案~~~~~~
答:(1+5)*3+1=19 (1+5)*8+1=49 (1+5)*18+1=109 (1+5)*33+1=199=() 3+5=8 8+10=18 18+15=3...详情>>
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