Page:Smith - Number Stories of Long ago (1919).djvu/65

 THE QUESTION BOX

1. How did Gupta learn the numerals?

2. Describe the appearance of books in Gupta’s time and country.

3. Why were the numerals used by Gupta no better than the others about which you have heard? What important symbol was lacking? About when was this symbol invented?

4. When Mohammed the son of Moses went to Bagdad, did he find the Arabs using our numerals? About when did our numerals reach Bagdad?

5. What did Mohammed the son of Moses do to make our numerals known in Bagdad and also in Europe?

6. About when did Gerbert live, and how did he come to know about our numerals? What prominent position did he hold?

7. About when did Leonardo of Pisa live, and what did he do to make our numerals known?

8. Why did Leonardo not have the book printed which he wrote when he became a man?

9. About when was printing from movable type invented in Europe?

10. What kind of printing was known before the invention of movable type? Why is it better for the printers to use movable type? 44