Directions: The following question is based on the information given below: (i) Seven books are placed one above the other, in a particular way. (ii) History book is placed exactly above Civics book. (iii) Geography book is fourth from the bottom and English book is fifth from the top. (iv) There are two books in between Civics and Economics books. How many books are there between Civics and Science books? To answer this question, which other extra information is required, if any, from the following?
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