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 convert the number zero(0) into a positive number using just one mathematical operator ?

A girl says this to her best friend: “I was born in 1955, and I celebrated my 17th birthday last weekend.” Her best friend thinks she’s lying, but she’s actually correct. How is that possible?

What came first, the chicken or the egg?

What do the following words have in common?

Assess
Banana
Dresser
Grammar
Potato
Revive
Uneven
Voodoo

Count the number of triangles in the below picture?

Imagine you are in a room with no windows or doors. How will you get out?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?