Question

Anirudh had a notebook containing 240 pages or 120 leaves made up of 60 sheets folded at the middle and stapled along the fold. Deepanshu took 24 sheets from the middle of the book. The sum of the page numbers on the remaining pages is?

Answer 1

Answer:

17352

Step-by-step explanation:

240 pages = 120 leaves = 60 sheets
1st page will have numbers
1,2,239,240
2nd page will have numbers
3,4,237,238
When 24 sheets are removed, 36 sheets will be left
The last sheet left will have numbers
71,72,169,170
Thus the sum of the numbers on the remaining pages are-
1+2+3+4...+71+72+169+170+171+172+...239+240 = 17352