Questions

In the given puzzle, the logic is the product of the number and its preceeding number gives the result.

9 = 9 x 8 = 72

8 = 8 x 7 = 56

7 = 7 x 6 = 42

6 = 6 x 5 = 30

5 = 5 x 4 = 20

Similarly,

3 = 3 x 2 = 6.

Office salaries expense would not come under a selling expense.

Continuously rendered services are those services, which are prepared and provided only to the customers who are physically present. This kind of service is not finished in instant time; it is a process, which is extended to a time limit. It is a kind of face-to-face interaction. For example reservation service, restaurant service, massage, etc.