求数列:2,9,28,65,( )A.124 B.125 C.126 D.127
问题描述:
求数列:2,9,28,65,( )
A.124 B.125 C.126 D.127
答
1³+1=2
2³+1=9
3²+1=28
4³+1=65
5³+1=126
选C