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

Count the number of triangles in the given picture.

You have to fill the below given grid in a manner that every row and column contains the digits 1 to 6. Also, make sure that the squares that are connected with each other must contains the same digit.

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.

Spot 5 differences in two Christmas tree below:

Count the number of triangles in the below picture?

Count the number of triangles in the picture below:

Can you find out the missing number in the grid?

Find the number of squares in the below picture

Find the hidden panda in the image below.