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

Can you make four (4) nines (9) equal 100?

Guess the hidden movie name?

How many Watermelons are there in the below picture?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?

You can see it everyday, But cannot touch it at will. What is it?

It spends most of its day eating white, but when it’s quick enough, it gets to eat fruit and sometimes some blue things. It’s in a dark room, where the walls are blue, it runs from a ghost that roams the halls and haunts it all the time. What is it?

I can write cow in 13 letters.

Can You?