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

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?

Outside a tattoo artist's shop, there was a signboard which read 'I make tattoos on only them who do not tattoo themselves'.

Reading it what do you think, does the tattoo artist tattoo himself?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?