Character Puzzles - General Questions

Find the missing number:

6   3   24
7   6   49
8   2   ?

Find the missing number:

4   1   4
8   6   48
7   6   ?

Find the missing number:

9   2   18
6   1   6
7   4   ?

Find the missing number:

2   1   2
9   6   54
9   2   ?

Find the missing number:

6   4   10
6   3   9
9   7   ?