Can you find the missing piece of the Porsche?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?

Which point will the car reach to go out?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

How many sides does a circle have?

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?

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?