# of 23. If you read 20 books this year,a. How many different sets of 6 books could you recommend someone to read?b. How many different ways could you pick your #1, #2, #3 books for the year?

Question
1 views
check_circle

star
star
star
star
star
1 Rating
Step 1

Total number of books read this year, n = 20

(a) To find the number of different sets of 6 books that could be recommended.

The number of possibilities to select r objects from n is given by the formula,

Step 2

Thus the number of different sets of 6 books means selecting 6 books from the set of 20 books randomly. Therefore the total number of such 6 pairs will be calculated as follows.

Step 3

(b) To find the number of different ways to pick first book, second book and third book.

The number...

### Want to see the full answer?

See Solution

#### Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in