I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

What is the next number in this series?

4,12,84,3612....

Why are all black people so quick ?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

A man is walking down a road with a basket of eggs. As he
is walking he meets someone who buys one-half of his eggs
plus one-half of an egg.
He walks a little further and meets another person who buys
one-half of his eggs plus one-half of an egg.
After proceeding further he meets another person who buys
one-half of his eggs plus one half an egg. At this point, he
has sold all of his eggs, and he never broke an egg.
How many eggs did the man have to start with?

You are given 2 eggs.
You have access to a 100-storey building.
Eggs can be very hard or very fragile means it may break if dropped from the first floor or may not even break if dropped from 100th floor, Both eggs are identical.
You need to figure out the highest floor of a 100-storey building an egg can be dropped without breaking.
Now the question is how many drops you need to make. You are allowed to break 2 eggs in the process

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

I am soft and cuddly that soothe your heart. But, If you pick my last name I am going to tear you all apart. Who am I?