Can you find the missing piece of the Porsche?

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.

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

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

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

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

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.