1. 1,0,31,80,63,( ),5
A.35 B.24 C.26 D.37
2. 11,17,( ),31,41,47
A. 19 B. 23 C. 27 D. 29
参考答案与解析:
1. B【解析】-1=07-1,0=16-1,31=25-1,80=34-1,63=43-1,(24)=52-1,5=61-1
2. B【解析】隔项质数列的排列,把质数补齐可得新数列:11,13,17,19,23,29,31,37,41,43,47.抽出偶数项可得数列: 11,17,23,31,41,47