2,3,6,9,17,()A.33 B.27 C.45 D.19请告知答案和思路,谢谢了!
题目可能是 2,3,5,9,17,()如果是这样,规律:两两之差为1,2,4,8,下一个是16,所以()=17+16=33,故选A