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

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?

What is the longest word in the dictionary?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

Can you count the number of quadrilaterals in the picture below?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

What is the Surname of Barbie Doll?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Given that

(78)^9 = 6
And (69)^4 = 11

Can you find out

(99)^2 =?

(Note: This is Logical, not Mathematical)

Can it be possible to build a house that has all its four walls facing towards the South?