If it took eight men ten hours to build a wall, how long would it take four men to build it?

What do you see in the image below

You are trapped in a room with two doors. One leads to certain death and the other leads to freedom. You don't know which is which.
There are two robots guarding the doors. They will let you choose one door but upon doing so you must go through it.
You can, however, ask one robot one question. The problem is one robot always tells the truth, the other always lies and you don't know which is which.
What is the question you ask?

What word is represented by this rebus?

A B C D E F G H

These are the letters given to you. Now you have to find out the letter that comes two to the right of the letter which is immediately to the left of the letter that comes three to the right of the letter that comes midway between the letter two to the left of the letter C and the letter immediately to the right of the letter F.

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

How many triangles are there on the puzzle below?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

Through your logical capabilities, can you make 7 an even?