2, 5, 11, 23, 47, ()。
A.79
B.91
C.95
D.105
2 5 11 23 47 () A.18 B.91 C.95 D.105
95, 47, 23, 11, 5, ()。A.1B.2C.3D.4
1.11, 2.23, 3.35,4.47, (), 6.71。 A.5.57B.5.58C.5.59 D.5.60
2,5,11,23,47,() A.71 B.67 C.97 D.95
5,11,23,47,95()。 A.190 B.191 C.192 D.196
2,5,11,23,47,()A.71 B.67 C.97 D.95