How can you write nineteen in a manner that if we take out one, it becomes twenty?

People put me on the table and cut me but do not eat me. What am I?

Which tank will fill first?

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.

If in a code language, DISTANCE is written as IDTUBECN and DOCUMENT is written as ODDVNTNE, the how will THURSDAY be coded as in the same language?

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?

There is something which you can be arrested for attempting but not for successfully completing.

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

The dirtier I get, the whiter I look. Who am I?

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