What is next number in the pattern below:

131 517 192 123 ?

What occurs twice in a week, once in a year but never in a day?

You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth.

How long would it take for the machine to cut the roll if each cut took 4 secs?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

Can it be possible to build a house that has all its four walls facing towards the South?

These types of puzzles are known as charades. What you have to do is find two words that are referred to in the first stanza and the second stanza and put them together to form the third word in the third stanza.

Just for example, if my first refers to 'off' and my second refers to 'ice', then my whole will be office.

My first is present - future's past -
A time in which your lot is cast.

My second is my first of space
Defining people's present place.

My whole describes a lack of site -
A place without length, breadth, or height.

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?

I cannot talk, but I always reply when spoken to. What am I?

What can you catch but never throw?

If 21x = 79x, what is the value of x?