单项选择题
A.16 B.27 C.8 D.26
求32+62+122+242+42+82+162+322=()A.2225B.2025C.1725D.2125
单项选择题求32+62+122+242+42+82+162+322=()
A.2225 B.2025 C.1725 D.2125
5,7,21,25,()A.30B.31C.32D.34
单项选择题5,7,21,25,()
A.30 B.31 C.32 D.34
2,3,6,9,18,()A.27B.45C.49D.56
单项选择题2,3,6,9,18,()
A.27B.45C.49D.56