推理题:9,1,4,3,40,()9,1,4,3,40,()81,80,121,120,哪个对啊

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推理题:9,1,4,3,40,()9,1,4,3,40,()81,80,121,120,哪个对啊推理题:9,1,4,3,40,()9,1,4,3,40,()81,80,121,120,哪个对啊推理题:

推理题:9,1,4,3,40,()9,1,4,3,40,()81,80,121,120,哪个对啊
推理题:9,1,4,3,40,()
9,1,4,3,40,()
81,80,121,120,哪个对啊

推理题:9,1,4,3,40,()9,1,4,3,40,()81,80,121,120,哪个对啊
公务员考试的题目:9,1,4,3,40,(),括号里应该是多少?
A:81 B:80 C:121 D:120
选D
把每一个都除以3,看余数
9÷3余数为0;
1÷3余数为1;
4÷3余数为1;
3÷3余数为0;
40÷3余数为1;
由两个余数为1的数,后都减1÷前都有一个倍数,即:n=(4-1)÷1=3;则有(x-1)÷40=3(x为第六个数)
即为:x=40×3+1=121.

120