1. Look at this series: F2, __, D8, C16, B32, … What number should fill the blank?

A. A16

B. G4

C. E4

D. E3

2. Look at this series: 664, 332, 340, 170, ____, 89, … What number should fill the blank?

A. 85

B. 97

C. 109

D. 178

3. Look at this series: V, VIII, XI, XIV, __, XX, … What number should fill the blank?

A. IX

B. XXIII

C. XV

D. XVII

4. Look at this series: 70, 71, 76, __, 81, 86, 70, 91, … What number should fill the blank?

A. 70

B. 71

C. 80

D. 96

5. Look at this series: 8, 43, 11, 41, __, 39, 17, … What number should fill in the blank?

A. 8

B. 14

C. 43

D. 44