Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

Find the number of squares in the below picture

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

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?

I taste better than I can smell. Who am I?

Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

An American nightclub called 'The Coconut Grove' had a terrible fire in which over 400 people died. A simple design flaw in the building led to a high death toll. Subsequently, regulations were changed to ensure that all public buildings throughout the country eliminated this one detail, which proved deadly. What was it?

Can you figure out the logic I used to decide the order of the following words:
gun, shoe, spree, door, hive, kicks, heaven, gate, line, den