1. Find the missing term in the series :

9, 12, 4, 8, 12, 15, 5, 9, 3, 6, 2, 6, 6, 6, ?

A. 4
B. 5
C. 6
D. 3

2. Find the missing term in the series :

1, 3, 5, 9, 17, 33, ?

A. 35
B. 37
C. 55
D. 65

3. Find the missing term in the series :

8, 16, 3, 27, 4, 8, 7, 19, 2, 0, 7, ?

A. 7
B. 9
C. 11
D. 13

4. Find the missing term in the series :

5, 6, 6.5, 6.5, 8, 7, 9.5, ?

A. 5.5
B. 6.5
C. 7.5
D. 11.5

5. Find the missing term in the series :

1.8, 3, 0.6, 2.5, 5.0, 0.5, 3.4, 2, 1.7, ?

A. 5.5
B. 6.5
C. 4.5
D. None of these