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

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

What does man love more than life, and hate more than death or mortal strife; that which satisfied men want; the poor have, and the rich require; the miser spends, the spendthrift saves, and all men carry to their graves?

A wealthy man lives alone in a small cottage. Being partially handicapped he had everything delivered to his cottage. The mailman was delivering a letter one Thursday when he noticed that the front door was ajar. Through the opening he could see the man's body lying in a pool of dried blood. When a police officer arrived he surveyed the scene. On the porch were two bottles of warm milk, Monday's newspaper, a catalog, flyers, and unopened mail. The police officer suspects it was foul play. Who does he suspect and why?

Replace the question mark in the picture below.

How far can you walk into the woods?

A man dies of old age on his 25 birthday. How is this possible?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

Can you spot the hidden girl in the picture below?

A bomb exploded in a room full of married couples and no one died. How?