Which of the below owl is odd one out?

A man desired to get into his work building, however he had forgotten his code.
However, he did recollect five pieces of information
* Fifth number + Third number = 14
* The fourth number is one more than the second number.
* The first number is one less than twice the second number.
* The second number and the third number equals 10.
* The sum of all five numbers is 30.

What is the code ?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

What brings you down but never up?

What type of tree can I carry in my hand?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

What word begins and ends with an E, but has only one letter?

What is the coolest letter in the alphabet?

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

What jumps when it walks and sits when it stands?