First Chapter

Some text. Some text. Some text. Some text. Some text. Some text. Some text. Some text. Some text. Some text. Some text. Some text. Some text. Some text. Some text. Some text. Some text. Some text. Some text. Some text. Some text. Some text. Some text. Some text. Some text.
$\begin{exercise} This is the first exercise in Chapter~1. This is the first exer... ... in Chapter~1. \answer Answer to the first exercise in Chapter~1. \end{exercise}$

$\begin{exercise} This is the second exercise in Chapter~1. This is the second ex... ...in Chapter~1. \answer Answer to the second exercise in Chapter~1. \end{exercise}$

$\begin{exercise} This is the third exercise in Chapter~1. This is the third exer... ...d exercise in Chapter~1. This is the third exercise in Chapter~1. \end{exercise}$