Can you find the missing piece of the Porsche?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

Cristina leaves home and then she makes exactly 3 left turns and returns home where she found 2 girls wearing the mask.

Who are these two masked girls?

Which Burger Is Different in below image?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

How can you take 2 from 5 and leave 4?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

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?