A.53
B.56
C.62
D.87
[单选题]:1,2,6,15,31,( )A.46B.61C.66D.56
[单选题]1,2,6,15,31,( )。A.53B.56C.62D.87
[单选题]1,2,6,15,31,( )。A.53B.56C.62D.87
[试题]1,1,2,6,15,()A.21;B.24;C.31;D.40;
[单选题]1,1,2,6,15,()A . 21B . 24C . 31D . 40
[主观题]1,2,6,15,40,104,()A.273B.329C.185D.225
[单选题]1,2,6,15,40,104,( )。A.233B.256C.273D.296
[单选题]1, 2, 6, 15,40, 104 ()A.273 B.329 C.185 D.225
[单选题]1, 2, 6, 15,40, 104, ( )A.329 B.273C.225 D.185
[单选题]1,2,6,15,40,104,( )。A.273B.329C.185D.225