What does this Rebus Picture means ?

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

I have branches, but no fruit, trunk or leaves. What am I?

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

You walk into a room where there are three primates held in their respective cages:
1) A lion who is eating the flesh of a goat.
2) An orangutan who is playing with blocks.
3) A donkey who is sitting idle.

Who is the most intelligent primate in the room?

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

What is the next number in the series?

15 29 56 108 208 ?

I travel all around the world but always stay in the corner. What am I?

What 8 letter word can have a letter taken away and it still makes a word. Take another letter away and it still makes a word. Keep on doing that until you have one letter left. What is the word?