Question 3 

$ xxd -r < data.xxd > data
$ file data
data: Zip archive data, at least v2.0 to extract
$ unzip data
$ ls pages

page-eighteen.pdf   page-one.pdf         page-twenty-five.pdf
page-eight.pdf	    page-seven.pdf       page-twenty-four.pdf
page-eleven.pdf     page-seventeen.pdf   page-twenty-one.pdf
page-fifteen.pdf    page-six.pdf         page-twenty.pdf
page-five.pdf	    page-sixteen.pdf     page-twenty-seven.pdf
page-four.pdf	    page-ten.pdf         page-twenty-six.pdf
page-fourteen.pdf   page-thirteen.pdf    page-twenty-three.pdf
page-nine.pdf	    page-three.pdf       page-twenty-two.pdf
page-nineteen.pdf   page-twelve.pdf      page-two.pdf