Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

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?

What is full of holes but still holds water?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

What goes up but never comes down?

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

What seven-letter word has hundreds of letters in it?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

A guy in his thirties is found dead in a forest. The shocking thing about the body is that he is wearing his swimming trunks snorkel and a facemask.

For your information, the nearest lake is some 10 miles away and the sea is hundreds of miles away.

How did he die then?