-1,1,5,11,19,29,()
A.30 B.31 C.32 D.41
-2,-1,1,5,(),29。 A.17 B.15 C.13 D.11
:1/2,3/2,5/6,11/30,()。A.29/64 B.40/57 C.41/330 D.108/119
:1 5,7,12,11,9,1 5,()。 A.6 B.8 C.18 D.19
1/2,3/2,5/6,11/30,()。A.29/64 B.40/57 C.41/330 D.108/119
-2 -1 1 5 ( ) 29。A.17 B.15 C.13 D.11