27,16,5,(),1/7。
A.16
B.1
C.0
D.2
16,27,16,(),1 A.5;B.6;C.7;D.8
27,16,5,(),1/7 A.16;B.1;C.0;D.2;
:27,16,5,(),17。A.16 B.1 C.0 D.2
1/16,1/27,1/16,1/5,______,7 () A.1/16 B.1 C.2 D.1/24
2,4,3,(),13/4,27/8,53/16。A.1 B.7/2 C.7/3 D.4
27,16,5,(),1/7。A.16 B.1 C.0 D.2