You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

Two boys were admitted to a school. When the headmaster asks them about their parents, they tell him that they have same parents (father and mother). On further inquiry, it turns out that they both share the same date for their birthday.

"Are you twins," ask the headmaster.
"No," replies the boys.

Is it possible?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

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

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

There are 2 cops parked along a one-way street looking for traffic violations. They spot a taxi driver going in the wrong direction, yet they do nothing.

Why?

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

If eleven plus two equals one, what does nine plus five equal?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?