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

Find the number of squares in the below picture

Can you find out the number that should replace the question mark with a valid reason?

O_er_t_o_

Complete the missing letters of the given word.

Count the number of triangles in the picture below:

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

There was a competition where the contestants had to hold something. At the end of the event, the winner was a person who had no hands or feet. What was it that the contestants had to hold?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

What work can one never finish?

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?