Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

A chess tournament is taking place on knock-out terms (the one who loses the match is out of the game).
(a) If 10 matches are played in total, how many players participated?
(b) If 20 players took part in the tournament, how many matches were played?

After undergoing a successful eye operation, A blind girl has just boarded a train to her home. The doctor asked her to open the bandages after 3 hours. On her train journey, she opened the bandages and within a fraction of the time she commits suicide by jumping off the train.

Though her operation was successful, Why did she commit suicide?

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

Using eight eights and addition only, can you make 1000?

How many triangles do you see in the picture puzzle below?

Can you move 2 matchsticks to form four equal sized squares.

What number when divided in half becomes zero?

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

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.