1. 3,2,5/3,3/2,( )
A.7/5 B.5/6 C.3/5 D.3/4
2. 27,16,5,( ),1/7
A.16 B.1 C.0 D.2
3. 0,1,1,2,4,7,13,( )
A.22 B.23 C.24 D.25
参考答案与解析:
1. A【解析】变形:3/1,4/2,5/3,6/4,7/5
2. B【解析】3^3=27, 4^2=16, 5^1=5, 6^0=1, 7^(-1)=1/7
3. C【解析】第四项=前三项之和