Question

Multiple pages of a book are printed on a large sheet, folded and cut to form a booklet. In this 16-page booklet, mistakes occurred in printing as shown in the diagram. Which statements are TRUE about the final booklet? 

• A. Page 13 appears before page 10
• B. Page 11 is the last odd-numbered page
• C. Page 4 is the first even-numbered page
• D. All pages appear in the correct orientation

Hint:

In booklet printing puzzles, visualize sheet folding step by step. Odd/even page positioning and orientation are key checks.

Answer 1

The Correct Option is A, B

Step 1: Understand folding sequence.
The sheet is printed with page numbers, folded, and cut. Because of misprinting, the order is disturbed.
Step 2: Check option (A).
From the folding shown, page 13 indeed comes before page 10. ⇒ Correct.
Step 3: Check option (B).
When folded, the last odd-numbered page in sequence is page 11, not 15. ⇒ Correct.
Step 4: Check option (C).
Normally page 2 should be the first even page. Here, the misprinting makes page 6 appear early. Thus statement (C) is false.
Step 5: Check option (D).
Not all pages are upright; some are upside down due to misprinting. ⇒ False.
Final Answer: \[ \boxed{\text{A and B}} \]