What is next number in the pattern below:

131 517 192 123 ?

What is so fragile that saying its name breaks it?

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

I don't get anymore wetter, no matter how much rain falls on me.

A man dies of old age on his 25 birthday. How is this possible?

What word is represented by this rebus?

Why is it against the law for a man living in Delhi to be buried in Mumbai?

I am written with two letters.
I said with the one.
I usually am seen with the two.

Who am I?