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

Can you find out the number that should replace the question mark with a valid reason?

Count the number of triangles in the given picture.

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.

Find out the number of circles in the given picture having Illusion

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

Can you find the six hidden animals in the picture below?

What do you see in the image below

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

How many triangles can you find in this given picture?