What number should come in place of the question mark below?

Once while in his court, King Akbar asked Birbal to write something on a wall that makes one sad when read in good times and makes one happy when read in sad times.

He took only a few moment and wrote something that fit the requirements. What did he write?

You need to remove two matchsticks to make the below equation true. Can you do it ?

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

What has many keys but can’t open a single lock?

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

O_er_t_o_

Complete the missing letters of the given word.

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

100 prisoners are stuck in the prison in solitary cells. The warden of the prison got bored one day and offered them a challenge. He will put one prisoner per day, selected at random (a prisoner can be selected more than once), into a special room with a light bulb and a switch which controls the bulb. No other prisoners can see or control the light bulb. The prisoner in the special room can either turn on the bulb, turn off the bulb or do nothing. On any day, the prisoners can stop this process and say "Every prisoner has been in the special room at least once". If that happens to be true, all the prisoners will be set free. If it is false, then all the prisoners will be executed. The prisoners are given some time to discuss and figure out a solution. How do they ensure they all go free?

How many triangles can you count in the figure given?