You have two books. One of them is upside-down and the other is rotated so the top of the book is facing you.
What is the sum of the first page in each book?
the first page of the book is always 1 whether the book kept else way.
so the sum of the first page in each book = 1+1 =2
whether the book is kept upside down or else way. but the 1st page is page # 1.
A book has 500 pages:
The 1st page says "Exactly 1 page in this book is false."
The 2nd page says "Exactly 2 pages in this book are false."
The 500th page says "Exactly 500 pages in this book are false."
Can any of the pages be true?
Mr. Ramanujam asked his students to find the sum of all pages of their maths book.
Chatur gave the answer as 643.
The teacher told him that he has not added one page.
Find the page number which the Chatur forgot to add.