What does this rebus means ?

PROG WORKRESS

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

Christina is older than Kareena and Karishma. Katrina is older than Karishma and younger than Kareena. If Kareena has a brother named John, who is older than Christina, who's the youngest?

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.

Find the last number in the series below:

voN luJ yaM raM ---

What does this rebus photo means?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Can you write down eight eights so that they add up to one thousand?

A man is found unconscious in front of a store at two in the morning. His head is bleeding and there’s a brick laying next to him. When the police arrive, they carry the man to jail. Why did they arrest him?