What is next number in the pattern below:

131 517 192 123 ?

Count the number of triangles in the given picture.

I shave every day, but my beard stays the same. What am I?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

My sock drawer has 26 blue socks, 13 pink socks, 33 green socks, and 12 red socks, how many socks would I have to pull out in the dark to be sure I had a matching pair?

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

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?