9,1,4,3,40,( )A.81 B.80 C.121 D.120
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9,1,4,3,40,( )A.81 B.80 C.121 D.120
选D详解如下a(n)=(-2240a(n-3)+10893a(n-2)+3276a(n-1))/1279a(1)=9 a(2)=1 a(3)=4 a(4)=3 (-2240a(1)+10893a(2)+3276a(3))/1279a(5)=40 (-2240a(2)+10893a(3)+3276a(4))/1279a(6)=121 (-2240a(3)+10893a(4)+3276a(5))/1279这是我在别的论坛看见的详解,觉得有些复杂
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9,1,4,3,40,( )A.81 B.80 C.121 D.120
选择:9,1,4,3,40,() A.81 B.80 C.121 D.120
9,1,4,3,40,()A 81 B 80 C 121 D 120
一道数量关系题,9,1,4,3,40,(A.81 B.80 C.121 D.120
9,1,4,3,40,( ) A.81 B.80 C.121 D.120,
9,1,4,3,40,( ) 下一个数字是多少?A 80 B 81 C 120 D 121 选那个?
数字推理:9,1,4,3,40,() A 80 B 81 C 120 D 121 答案为D,我思考了一个月不得其解,请高
9,1,4,3,40,( ) A.81 B.80 C.121 D.120答案C,请问过程,谢谢
两道数字推理题9,1,4,3,40( )A 81B 80C 121D 12056,66,78,82,( )A 98B 1
求数字排列答案及思路9,1,4,3,40,( ) A.81 B.80 C.121 D.120请写出解题思路,
已知a、b、c、d满足方程组3a+b+c+d=1a+3b+c+d=9a+b+3c+d=9a+b+c+3d=5
A B C D × 9 ___________________ D C B A (1) A = ( )(2) B = (