Question

Some books are arranged are above the other if a book is at 18th position from top and 5th position from bottom then the total number of book is

Answer 1

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Here is the solution:

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The book is the 18th book from the top

⇒ There are 17 books above it

The book is the 5th position from bottom

⇒ There are 4 more books below it.

Total number of books = 17 before it + the book + 4 books after it

Total number of books = 17 + 1 + 4

Total number of books = 22

Answer: There are a total of22 books

Answer 2

Hi , there !!!

using trick



we have , total number of book =>

arranged book in top + arranged book in last -1


that is

Total no of book is => m + n - 1


so we have


18 + 5 -1


=> 22


hence , no of total books is 22 .


hope you got this trick .


hope it helps you !!!

thanks !!!

Ranjan kumar