As an Incentive to Get New Customers, the Local Branch $$\begin{array} { | c | c | c | c | c | } \hline 10 & 30 & 10 & 30 & 10 \\\hline 20 & 10 & 50 & 10 & 20 \\\hline\end{array}$$

Essay

As an incentive to get new customers, the local branch of a bank launched "bouncing
for bucks." During this week long event, any customer opening a new checking account
with the bank would have the opportunity to throw a bouncy rubber ball into a large box
divided into squares. Each square was labeled with a dollar amount that would be
deposited into his / her new checking account. The way the box was labeled is shown
below. $$\begin{array} { | c | c | c | c | c | } \hline 10 & 30 & 10 & 30 & 10 \\\hline 20 & 10 & 50 & 10 & 20 \\\hline\end{array}$$
a. What is the probability that a customer gets $20 or more?
b. What is the probability that a customer gets less than $20?
c. What is the probability that a customer gets $20 or $30?
d. What is the probability that two customers in a row get $50?