Question

There are 44 books arranged in a row in a library. A book on ancient history is 21st from the left side of the row and a book on political history is 15th from the right side of the row. What is the total number of books between the books on ancient and political history?

• A. 7
• B. 6
• C. 9
• D. 8

Answer 1

The correct option is D 8

Adding the position of the books on ancient and political history, we get:

Ancient histroy + Political history
= 21 + 15
= 36

Hence, 36 should be less than the total number of books.

∴ The number of books in between the books on ancient and political history
= Total number of books – (Position of the book on ancient history from left + Position of the book on political history from right)
= 44 – (21 + 15)
= 44 – 36
= 8