Problem of the Day

Chapter 12, Lesson 3

A box contains one each of these U.S. coins: a half-dollar (H), a quarter (Q), a dime (D), and a nickel (N). Without looking, Joaquim selects one coin from the box and puts it aside. Then, again without looking, he selects a second coin from the box.

a. Draw a tree diagram and list all the possible outcomes for the two coins Joaquim selected.
b. In how many of these outcomes is the value of the first coin greater than the value of the second coin?
c. In how many of these outcomes is the value of the two coins selected less than 25 cents?