Answer each probability question.
a. List the equally likely outcomes if a coin is tossed twice.
b. List the equally likely outcomes if two coins are tossed once.
c. Draw a tree diagram that illustrates the answers to 6a and b.
d. Describe the connection between the expressions 2C0 = 1, 2C1 = 2, and 2C2 = 1, and the results of your answers to 6a-c.
e. Give a real-world meaning to the equation
(H + T)2 = 1H2 + 2HT + 1T2