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

I know a nine-letter word having only one vowel.
Do you ?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

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

In the given picture, you can find two letters missing. When two particular letters are placed in the missing spots, you get an eight-letter word while reading in the anti-clockwise direction. Can you find out the missing letters and the missing word eventually?

John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

Find the Goldfish below the given Image.

Can you replace the question mark with the correct number?

John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller.

I called their home number and one of them picked up.
I asked. 'Does John lie?' The person replied with a yes.

Whom did I talk with, John or Jacob?