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.

Which of the following words don't belong in the group and why?
CORSET, COSTER, SECTOR, ESCORT, COURTS

Using Only Five 5's and any mathematical operator make sum as 37

Solve this riddle by finding the odd one out from the rest.

What is the next number in the series?

15 29 56 108 208 ?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

If EELS + MARK + BEST + WARY = EASY

What does HELP + BARK + WARD + LEAD equal?

Why is 6 afraid of 7?

What is the difference between a jeweller and a jailer?

What does this rebus puzzle means ?