问题
单项选择题
11,17,(),31,41,47
A.19
B.23
C.27
D.29
答案
参考答案:B
解析:
答:选B,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
11,17,(),31,41,47
A.19
B.23
C.27
D.29
参考答案:B
解析:
答:选B,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