Answer:
What letter comes next: O T T F F S S ?
Being able to interpret the letters on this screen proves that you have this quality.
Different lights do make me strange, thus into different sizes I will change.
What’s black in the morning, red in the afternoon, and white at night?
According to the music industry, you can count on a midnight train and the devil to turn up here.
I have two eyes in the front and a lot of eyes on my tail
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?