This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

A man is walking down a road with a basket of eggs. As he
is walking he meets someone who buys one-half of his eggs
plus one-half of an egg.
He walks a little further and meets another person who buys
one-half of his eggs plus one-half of an egg.
After proceeding further he meets another person who buys
one-half of his eggs plus one half an egg. At this point, he
has sold all of his eggs, and he never broke an egg.
How many eggs did the man have to start with?

What time is it when an elephant sits on a fence?

What is the largest number you can write with just 3 digits?

Can you divide the below-given shape into four equal and identical pieces?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Can you name some countries which do not have the alphabet 'A' in them?