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.

Can you find the hidden animal in the picture below?

Remove two matchsticks to make the below equation correct.

Which of the below owl is odd one out?

Can you find the key in the picture below?

How many triangles can you count in the figure given?

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

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

Spot 5 differences in two Christmas tree below:

Which tank will fill first?