Question 3
The village library has just one stack of books. Whenever someone borrows a book, they record their name and take the top book. Whenever they return it, they record their name and place the book on top. The picture shows the register on the left and the initial stack on the right.
The register, in order, says: Alba borrows; Felix borrows; Alba returns; Marta borrows; Felix returns; Cato borrows. Initially, from top to bottom, the books are Charlotte’s Web, Curious George, Go, Dog, Go!, The Hobbit, and Fox in Socks. Which book did Cato borrow?
The register, in order, says: Alba borrows; Felix borrows; Alba returns; Marta borrows; Felix returns; Cato borrows. Initially, from top to bottom, the books are Charlotte’s Web, Curious George, Go, Dog, Go!, The Hobbit, and Fox in Socks. Which book did Cato borrow?