Answer:
I am a key that is playful. What am I?
Adored by few, feared and hated by many. Mistress of the entire universal reason, master in the art of numbers. Some may have solved many of my mysteries, but there are still many of them to find. What am I?
What is seen in the middle of March and April that cannot be seen at the beginning or end of either month?
I love spinach.
I'm an animal. I love marching. I always wear a tuxedo. What am I?
What made Cyclops quit teaching?
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic