Question

A bookshelf has 12 books, 5 magazines, 7 board games, and 4 puzzles. Find the following probabilities and round your answer to 3-decimal places or a percent with 1-digt past the decimal.

a. The next item selected is a board game.
b. The next item selected is not a book.
c. The next item selected is a magazine or a puzzle.
d. The next item selected is a book, that is then put back, followed by a puzzle being selected

Answer 1

a. The probability of selecting a board game is 7/28 or 0.250. b. The probability of not selecting a book is 16/28 or 0.571. c. The probability of selecting a magazine or a puzzle is 9/28 or 0.321. d. The probability of selecting a book and then a puzzle is (12/28) * (4/28) or 0.086.

Step-by-step explanation:

a. The probability of selecting a board game is 7/28 or 0.250.

b. The probability of not selecting a book is 16/28 or 0.571.

c. The probability of selecting a magazine or a puzzle is 9/28 or 0.321.

d. The probability of selecting a book and then a puzzle is (12/28) * (4/28) or 0.086.