What does it mean?

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

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

Count the number of squares in the picture below.

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Edward James went for tiger hunting.

It was not his lucky day.



He got six tigers without heads, nine tigers without the tail and eight cut in two halves.

How many tiger did he hunted ?

You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth.

How long would it take for the machine to cut the roll if each cut took 4 secs?

Imagine a box with two cogwheels, one big with 24 teeth and one small with 8 teeth. The big one is firmly attached to the center of the box which means it does not turn or move while the small one rotates around the big one.

How many times do you think that the smaller wheel will turn compared to the box when it turns once around the big one?