Answer:
There are 30 cows and 28 chickens. How many didn't?
The more you take, the more you leave behind.
I am free for the taking. Through all of your life, though given but once at birth. I am less than nothing in weight, but will fell the strongest of you if held.
What is as big as you are and yet does not weight anything?
What is the smallest sentence with all letters in the English alphabets?
Before Google, we actually had to physically look things up in this building full of knowledge.