Can you find the missing piece of the Porsche?

Can you replace the question mark with the correct number in the below table sequence?

What is full of holes but still holds water?

Can you count the number of triangles inside a triangle?

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.

What will you call your mother's brother's brother-in-law?

I’m tall when I’m young, and I’m short when I’m old. What am I?

Find out which of the given views in the picture is accurately the top view of the given pyramid.

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

What work can one never finish?