I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

What is next number in the pattern below:

131 517 192 123 ?

John was writing his first book. After saving the document, he locked his laptop with a password and mentioned some phrases for the hint box.

A friend of his tried opening his laptop but found out that it was password protected. Following is the hint that appeared.
1 mobile 3 books 2 roars 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches.

Can you help him in cracking the password?

Buy me, smell me or deliver me, I do not change.

Who am I?

A blonde put eyeliner on her head. Why?

A little girl goes to the store and buys one dozen eggs. As she is going home, all but three break. How many eggs are left unbroken?

Remove two matchsticks to make the below equation correct.

What have one eye but still cannot see?

While house hunting in London, I came across a very good leasehold property Discussing the lease the landlady told me:

'The property was originally on a 99 years lease and two-thirds of the time passed is equal to four-fifths of the time to come. Now work it out for yourself and see how many years are to go!

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?