How many ways can a librarian arrange 15 books on a top shelf if she has 20 books from which to pick?

What is the order of magnitude for the number of liters in a large bottle of soda served at a party

Jenny borrowed $500 for five years at 4 percent interest, compounded annually. what is the total amount she will have paid when she pays off the loan? total amount = p (1 + i)t a. $608.33 b. $729.99 c. $765.77 reset next

In a sale there is 25% of all prices a chair costs £45 in sale how much was it before the sale