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?

Which city is three-fifths chick two third cat and 50% goat?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

The LCD device should be able to tell the right time in the format HH:MM: SS in a 12-hour format. You can refer to the picture to get an idea. The device is a simple "level indicator" which has to be converted into a watch. How will you program it to work?

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

Can you count the number of squares in the figure below?

The following question it puts forth you:

25 - 55 + (85 + 65) = ?

Then, you are told that even though you might think it's wrong, the correct answer is actually 5!

Whats your reaction to it? How can this be true?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?