Question

Mary is proofreading an eBook. Sometimes she has to scroll several pages at a time. Which key on the numeric keypad will help her scroll down page-wise?

Answer 1

Key 3.

Step-by-step explanation:

It is key 3 because when the number lock is off, it can work as a page down key. She is complaining about having to scroll little by little, and key 3 scrolls down page by page, saving her from the struggle. Hope this helps :)