$\newcommand{\identity}{\mathrm{id}} \newcommand{\notdivide}{{\not{\mid}}} \newcommand{\notsubset}{\not\subset} \newcommand{\lcm}{\operatorname{lcm}} \newcommand{\gf}{\operatorname{GF}} \newcommand{\inn}{\operatorname{Inn}} \newcommand{\aut}{\operatorname{Aut}} \newcommand{\Hom}{\operatorname{Hom}} \newcommand{\cis}{\operatorname{cis}} \newcommand{\chr}{\operatorname{char}} \newcommand{\Null}{\operatorname{Null}} \newcommand{\lt}{<} \newcommand{\gt}{>} \newcommand{\amp}{&} \definecolor{fillinmathshade}{gray}{0.9} \newcommand{\fillinmath}[1]{\mathchoice{\colorbox{fillinmathshade}{$\displaystyle \phantom{\,#1\,}$}}{\colorbox{fillinmathshade}{$\textstyle \phantom{\,#1\,}$}}{\colorbox{fillinmathshade}{$\scriptstyle \phantom{\,#1\,}$}}{\colorbox{fillinmathshade}{$\scriptscriptstyle\phantom{\,#1\,}$}}} \newcommand{\sfrac}[2]{{#1}/{#2}} $

Exercises 5.20 Fill-In, Literal String Answers

For a string answer, PreTeXt compares the reader’s response against the answer as a literal string. So characters that have special meaning in a regular expression, such as ., (, or +, are matched exactly rather than acting as wildcards or operators. These examples exercise that behavior across a range of such characters, whether the correct answer is compared explicitly (with use-answer or literal ) or left to be supplied automatically from the fillin.

1. Fill-In, Decimal Point.

2. Fill-In, A Dotted Address.

3. Fill-In, A Formula with Several Symbols.

4. Fill-In, A File Path.

5. Fill-In, A Price.

6. Fill-In, Literal Match Ignoring Case.

7. Fill-In, Explicit Literal Test.

8. Fill-In, Answer Taken from the Fillin.

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