Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

What does the below rebus riddle means?

What has a bottom at the top?

A man is trapped in a room. The room has only two possible exits doors. Through the first door there is a room constructed from magnifying glass. The blazing hot sun instantly fries anything or anyone that enters. Through the second door there is a fire-breathing dragon. How does the man escape?

It belongs to you, but other people use it more than you do. What is it?

A woman who works in a sweet shop has a measurement of 32-26-36, is 5"4" tall, and wears size "6" shoes. What do you think she weighs?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

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

How can you leave a room with two legs and return with six legs?

I make two people out of one. What am I?