What does does this rebus picture means ?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

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

No one wants to have it, but if one got it, he does not want to lose it. What is It?

What is next number in the pattern below:

131 517 192 123 ?

How many bananas can you eat if your stomach is empty?

Rebus Puzzle Definition: A rebus is an illusion device that uses pictures to represent words or parts of words.
What does This Rebus Puzzle Identify?

A pet show was happening in my locality. I went down along with my kids. In that show, I noticed that all except two of the entries were cats. All except two were dogs and all except two were Monkeys.

Can you find out how many of each animals were present in that pet show?

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

Can you find out who is the kidnapper in below Picture and why, Explain ?