Please show all steps to get the correct answer. Thank you.

Question 9 - 0/ 4 pts The library is to be given 8 books as a gift. The books will be selected from alllst of 19 titles. If each book selected must have a different title. how many possible selections are there? m. | Correct Answer > 75,532 ' 1 Qt) | . . ' When n different Items are available and r of them are | | selected without replacement. the number of different combinations (order does not matter) is