All the page numbers from a book are added, beginning at page 1. However one page number was added twice by mistake. The sum obtained was 1000. Which page number was added twice?

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Solution

The correct option is D 10
Option D is the correct answer. Check the video for the approach.

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All the page numbers from a book are added, beginning at page 1. However one page number was added twice by mistake. The sum obtained was 1000. Which page number was added twice?

The correct option is D 10Option D is the correct answer. Check the video for the approach.

The correct option is D 10
Option D is the correct answer. Check the video for the approach.