Decode this picture on T-Shirt and tell what it says ?

How many times can you subtract the number two from the number fifty?

Find the value of "?" in the ball picture Riddle below:

A woman lives in a Tall building thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

The answer I give is yes, but what I mean is no. What was the question?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

What is the word or phrase below?
R | E | A | D

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

Our product and our sum always give the same answer. Who are we?