23. what does the term expense mean?

Answer and  explanation :

Expense is defined as the cost to run a business.It can be separated into various categories of day to day expense and one time expense.Some expenses are charged regularly as such for daily business, like normal canteen expense, electricity, stationary, etc:Whereas some expenses like repairs and maintenance are charged once in a while.

These are the multiples of 15 but what you are probably asking or what are the factors of 15

Sry i’m so bad at math! wish i could answer #imdumb