What always comes into a house through the keyhole?

Solve this riddle by finding the odd one out from the rest.

Open a Laptop which is password protected. Hint for the password is given as below:

1 mobile 3 books 2 Boards 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

Solve below popular number sequence
314 159 265 358 979 323 846 ?