If eleven plus two equals one, what does nine plus five equal?

Which is the correct shadow of the bird?

Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

What has many keys but can’t open a single lock?

If a wheel has 54 spokes, how many spaces are there between the spokes?

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

The more you take me, the more you leave me behind.
Who Am I?

How many times can you subtract the number two from the number fifty?

These types of puzzles are known as charades. What you have to do is find two words that are referred to in the first stanza and the second stanza and put them together to form the third word in the third stanza.

Just for example, if my first refers to 'off' and my second refers to 'ice', then my whole will be office.

My first is present - future's past -
A time in which your lot is cast.

My second is my first of space
Defining people's present place.

My whole describes a lack of site -
A place without length, breadth, or height.