13,23,37,47,61,()
A.71
B.84
C.97
D.101
11, 13, 16, 21, 28, ()A.37 B.39 C.41 D.47
11, 13, 16, 21, 28, () A.37 B.39 C.41 D.47
51,49,87,13,45,55,63,()A.67B.37C.47D.57
51,49,87,13,45,55,63,()A.67 B.37 C.47 D.57
7,13,23,38,61,97,() A.112 B.138 C.153 D.182
12 23 35 47 ()。A.74 B.61C.56D.82