I have teeth but i don't bite. Who Am I ?

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

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

There are three boxes on a table. One of the box contains Gold and the other two are empty. A printed message contains in each box. One of the message is true and the other two are lies.

The first box says "The Gold is not here".

The Second box says "The Gold is not here".

The Third box says "The Gold is in the Second box".

Which box has the Gold?

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

What kind of tree can you carry in your hand?

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

What seven-letter word has hundreds of letters in it?

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?