找规律 1,2,4,8,?,?64…… 1,3,7,15,?,?,127…… 1,4,9,16,?,?,49...答:1 3 7 15 (31) (63) 127 规律:依次为1加上2的0次方、1次方、2次方……3.1 4 9 16 (25) (36)49 规律:依次为1的平方、2的平方、3的平方……4.1 2 3 5 8 (13) (21)规律:从第3个数开...
找规律11,16,26,(),127答:把11,16,26,(x),127看成高阶等差数列,反复求差:差:5,10,x-26,127-x,差:...5,x-36,153-2x,所以5+153-2x=2(x-36),158-2x=2x-72,230=4x,x=57.5.
找规律, 2,1,5,7,17,(),(),127答:你好,规律是2^(N-1)+(-1)^(N-1)2=2^0+1 1=2^1-1 5=2^2+1 7=2^3-1 17=2^4+1 ...127=2^7-1 所以括号内应该填入2^5-1=31,和2^6+1=65 2,1,5,7,17,(31),(65),127 ...
找规律8,11,14,17(),23,()... 3,5,9,17,33(),129...答:8,11,14,17(20),23,(26)...3,5,9,17,33(65),129...3,7,15,31,63,(127)255,...1,4,9,16,(25),(36)49(64)...
1,3,7,15,( ),( ),127 找规律答:1,3,7,15,(31 ),( 63),127 麻烦采纳,谢谢!