What is so fragile that saying its name breaks it?

What is next number in the pattern below:

131 517 192 123 ?

A bomb exploded in a room full of married couples and no one died. How?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?

I am white when I am dirty, and black when I am clean. What am I?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

Bobby and Wilbur decided to take their respective car out of the garage and race. None of them cheated and they both stood at the start time and decided to cover a distance in full throttle. The first to reach the mark was to be declared the winner.

Upon reaching the finishing mark, they found out that Bobby's car was 1.2 times faster than Wilbur's. Now, Wilbur had reached the mark about 1 minute and 30 seconds later than Bobby. Bobby's car reached the mark of 60 MPH on average.

Can you calculate the distance between the starting mark and the final mark with the help of the given data?