So I've got this problem: A sheet was torn from a book (which is e.g. pages 22,23). The sum of all the remaining pages is 7495. How many pages were there originally in the book if they start from 1?
I've tried to fit that in an arithmetic progression formula but then I got too many variables. Any ideas on how to start better?
I've tried to fit that in an arithmetic progression formula but then I got too many variables. Any ideas on how to start better?