How many triangles are there on the puzzle below?

Rebus Puzzle Definition: A rebus is an illusion device that uses pictures to represent words or parts of words.
What does This Rebus Puzzle Identify?

A thief is convicted in Mexico. He gets the death penalty. The judge allows him to say the last sentence to determine how the penalty will be carried out. If the thief lies, he will be hanged, if he speaks the truth he will be beheaded. The thief tells the last sentence and to everybody's surprise some minutes later he is set free because the judge cannot determine his penalty. What did the thief say?

What number when divided in half becomes zero?

If your uncle’s sister is not your aunt, what relation is she to you?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

The current time can be represented by below textual rebus.

0
=========
B.Sc
LLB

Can you tell us the current time?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C