[Answer] 8. We will never know how many copies this book has sold but virtually all sources agree that it is by far the best-selling book of all time.

Step 1 : Introduction to the question "8. We will never know how many copies this book has sold but virtually all sources agree that it is by far the best-selling book of all time. "

...1. Webster's Dictionary 2. The Bible 3. Guinness Book of Records 4. Oxford English Dictionary While these are all best-sellers, it is generally agreed that the Bible is the best-selling book of all time. Apparently, it has the distinction of being the most shoplifted book of all time too. Recent estimates are that over 6 billion copies have been printed, sold or distributed in more than 2,000 languages and dialects (as of 2002).

[Answer] 4. I think Hercule Poirot and Miss Marple would agree that this rose was named after one of the best crime novelists of our time. Who was she?

Step 1 : Introduction to the question "4. I think Hercule Poirot and Miss Marple would agree that this rose was named after one of the best crime novelists of our time. Who was she?"

...1. Val McDermid 2. Sue Grafton 3. Agatha Christie 4. Martina Cole Agatha Christie was a famous British crime novelist born in 1890. Her books included "Murder on the Orient Express" (1934), "Death on the Nile" (1937) and "The Mirror Crack'd from Side to Side" (1962). The rose named after Agatha Christie was introduced in 1988 by Kordes in Germany. The flower is a pale pink climbing rose with a light fragrance.