Question

Seven-year-old Sangram is not allowed to touch the TV remote. Nevertheless, he uses the remote to change the volume from level 15 to 17. His parents, who are in the next room, seem unaware. The next day, Sangram becomes bold and turns the volume from level 15 to 30. His father yells at him, "Stop playing with the remote!" What prevented Sangram’s father from noticing the volume change on the previous day?

Answer 1

Answer:

It was only 2 units up.

Explanation:

A small increase in the volume would no alert the father of Sangram who is one room away, because that change would only be noticeable for Sangram who is in the same room, but when he doubled the volume from 15 to 30, it was more obvious for his father, one room away, that Sangram was using the remote control and that he was changing the volume in the TV.