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Ripping Pages
Q If you ripped the following pages out of a book, how many separate sheets of paper would you remove? The page numbers are 4, 5, 24, 47, and 48.

A You would have four sheets of paper. The odd pages of a book are on the right side, and the even pages are on the left. Therefore, pages 47 and 48 are opposite sides of the same sheet of paper.

Source: Sterling Pocket Puzzlers,Brain Teasers,p.20