(2) Three plates with different sizes indicate that the number of literary books accounts for 60% of all books; The number of sci-tech books accounts for 30% of all books; The number of illustrated books accounts for10% of all books; The sum of the percentage of all kinds of books in the total number of three kinds of books should be100%;
(3) Literature books are the most, and picture books are the least;
(4) Literature books: 100×60%=60 (volumes),
Science and technology book: 100×30%=30 (book),
Pictorial:100×10% =10 (Ben),
A: There are 60 literature books, 30 science books and picture books 10.
So the answer is: (1) the total number of books in the corner, fan-shaped, (2)60%, 30%, 10%, 100%, (3) literary books and pictorial, (4)60, 30,/kloc.