6. Look at this series: VI, 10, V, 11, __, 12, III, … What number should fill the blank?

A. II

B. IV

C. IX

D. 14

7. Look at this series: (1/9), (1/3), 1, ____ , 9, … What number should fill the blank?

A. (2/3)

B. 3

C. 6

D. 27

8. Look at this series: 83, 73, 93, 63, __, 93, 43, … What number should fill the blank?

A. 33

B. 53

C. 73

D. 93

9. Look at this series: 15, __, 27, 27, 39, 39, … What number should fill the blank?

A. 51

B. 39

C. 23

D. 15

10. Look at this series: 72, 76, 73, 77, 74, __, 75, … What number should fill the blank?

A. 70

B. 71

C. 75

D. 78