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

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

Can you count the number of quadrilaterals in the picture below?

Can you count the number of blocks in the picture below?

Can you count the number of triangles in the picture below?

Spot 5 differences in two Christmas tree below:

You are given 16 witch hats. The hats are divided in four different colours – red, blue, green and yellow. Every colour has been assigned to four hats. Now each of the hat will be glued with a label of an arithmetic sign – ‘+’, ‘-‘, ‘x’ or ‘/’. But you can label one sign only once on one colour. In such an arrangement, the hats can be uniquely defined by its colour and symbol.

Can you arrange all the 16 hats in a 4x4 grid in a fashion that no two rows and columns have a repetition of colour or sign?
We have arranged four hats in the below picture to assist you.

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

What do you see in the given picture?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.