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