closed book sentence in Hindi

Examples

1. This'closed book'was sold to Chesnara for ?7.5 million on 5 May 2005.
2. I d prefer to think of it as a closed book ."
3. A central reading room offers access to open and closed book stacks.
4. "As far as we're concerned, it's a closed book, " he said.
5. Slocum considers the Aggies'internal strife a private matter and a closed book.
6. As he saw it, " They were thought of as a closed book.
7. Others clap, or open and close books in which the pictures are moving.
8. The IFPA requires individuals to take a closed book, proctored exam.
9. The thing Valentine likes about Hough is that he isn't a closed book.
10. Interesting even for those of us to whom numismatics is a closed book.