You can see three almost identical images below. Can you spot the odd one out from them?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Can you solve the maths in the below-given picture equation?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

What do you get if you add 2 to 100 four times?

Today is John's birthday.
A year ago, John had five candles and he lit all the candles except the one at the last.
Now he is going to light all the candles.

How old is John Today?

(He is not five today.....)

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.