Nice trick question—it plays on how books are printed.
At first glance, it looks like 6 pages were torn out (7, 8, 100, 101, 222, 223). But in a book, each **sheet of paper contains two pages on each side** (front and back), meaning **4 page numbers per sheet**.
* Pages **7 & 8** are on the same sheet
* Pages **100 & 101** are *not* on the same sheet → they belong to different sheets
* Pages **222 & 223** are also on different sheets
Breaking it down correctly:
* Sheet 1: pages 7–8 (with 5–6 on the back)
* Sheet 2: pages 99–100 (with 97–98 on the back)
* Sheet 3: pages 101–102 (with 103–104 on the back)
* Sheet 4: pages 221–222 (with 219–220 on the back)
* Sheet 5: pages 223–224 (with 225–226 on the back)
👉 **Total: 5 sheets torn out**
So the correct answer is **5**, not 6.