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?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

Can you find out the remainder when 3^300 is divided by 5?

What's the only room from which no one can enter or leave

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

Which Travels Faster? Solve below famous picture riddle:

Can you identify the hidden rebus in the image below?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?