Novel
Algebra
Level
3
A leaf is torn from a paperback novel. The sum of the numbers on the remaining pages is 15000. What is the sum of page numbers of the torn leaf.
The answer is 51.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
There is actually two solution
if book has 173 page then Σ n (1 to 173) = 15051 so page 25 & 26 are torn out
or if book has 174 page then Σ n (1 to 174) = 15225 so page 112 & 113 are torn out