Character Puzzles - General Questions

Find the missing number:

2   1   2
9   6   54
9   2   ?

Find the missing number:

6   2   18
4   2   12
6   3   ?

Find the missing number:

3   2   5
5   4   9
7   6   ?

Find the missing number:

4   1   4
8   6   48
7   6   ?

Find the missing number:

6   2   38
5   2   27
6   4   ?