You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

There are 100 bulbs in a room. 100 strangers have been accumulated in the adjacent room. The first one goes and lights up every bulb. The second one goes and switches off all the even-numbered bulbs - second, fourth, sixth... and so on. The third one goes and reverses the current position of every third bulb (third, sixth, ninth? and so on.) i.e. if the bulb is lit, he switches it off and if the bulb is off, he switches it on. All the 100 strangers progress similarly.

After the last person has done what he wanted, which bulbs will be lit and which ones will be switched off?

Find out the number of circles in the given picture having Illusion

What number do you get when you multiply all of the numbers on a telephone's number pad?

Can you divide the below-given shape into four equal and identical pieces?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

What has many teeth, but cannot bite?

John was drowned by he was not wet. How?

What makes this number unique: 8,549,176,320?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?