Probability Review Worksheet
1: A bag contains 7 pennies, 4 nickels, and 5 dimes. You reach in a grab 3 coins. Find the probability of each
selection:
(a) All 3 pennies
(b) All 3 nickels
(c) All 3 dimes
(d) 2 pennies & 1 dime
(e) 1 penny, 1 dime, & 1 nickel
(f) 1 dime & 2 nickels
2: A bag contains 5 red, 9 blue, and 6 white marbles. Find the probability of each:
(a) Selecting a blue then a white marble with replacement
(b) Selecting 2 red, 4 blue, then 1 white marble without replacement
(c) Selecting 5 red and 3 white marbles with replacement
(d) Selecting 4 blue and 5 white marbles without replacement
3: Sharon has 8 mystery books, 7 academic text books, and 9 science fiction books stored in a box. Find the
probability of each:
(a) Selecting 3 mystery books and 7 science fiction books at-one-time
(b) If you randomly grab 5 books, what is the probability of selecting 3 science-fiction book?
(c) Selecting 5 mystery books then 2 academic text books with replacement
(d) If you randomly grab 7 books, what is the probability of selecting 3 science fiction and 2 mystery books.
(e) Selecting 3 academic text books and 6 science fiction books without replacement.