Look at the picture and find out which square is not linked with any of the other squares.

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

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

What has a ring but no finger?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

There are three light switches outside a room. One of the switches is connected to a light bulb inside the room.
Each of the three switches can be either 'ON' or 'OFF'.

You are allowed to set each switch the way you want it and then enter the room(note: you can enter the room only once)

Your task is to then determine which switch controls the bulb?

Count the squares in the matchstick puzzle below?

If 21x = 79x, what is the value of x?

In the picture that is attached with this question, you can find a square which comprises of four little squares inside it. Consider this square to be made with matchsticks. You have to remove two matchsticks such that only two squares remain instead of five.How will you do it ?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?