Books on a shelf are arranged in order of their number of pages, from the fewest pages at the left end to the most pages at the right end, and no two books have the same number of pages. A dictionary is 14th from the left end and 9th from the right end. Four new books, each with more pages than the dictionary, are put on the shelf in their correct places. What is the position of the dictionary from the right end now?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 13th
Books with more pages than the dictionary go to its right, so all the new books join the part of the shelf on the right of the dictionary.
Before: the dictionary is 9th from the right, so 8 books are on its right
The four new books all go to its right: \(8+4=12\) books on its right
Position from the right now \(=12+1=13\)th
(From the left it is still 14th.)
