Which number should replace the question mark?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

A generous owner of a company decided to give a bonus of $45 to every man and $60 to every woman on his birthday. But only one-ninth of the men and one-twelfth of the women were present to take the bonus.

Can you calculate the amount of money the owner spent if there were 3552 employees?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

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

Can you solve the maths in the below-given picture equation?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

A beggar on the street can make one cigarette out of every 6 cigarette butts he finds. After one whole day of searching and checking public ashtrays the beggar finds a total of 72 cigarette butts. How many cigarettes can he make and smoke from the butts he found?

What do you think with the below Picture ?