What is next number in the pattern below:

131 517 192 123 ?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?

Decode the movie name from the below picture?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

I am an eight letter word and I am a computer terminology.
The second, third and fourth letters make an animal.
The fourth, fifth, sixth, seventh and eighth letters make a weapon.
The first, second, third and fourth letters can be taken as an outcome of any exam.
The fifth, sixth, seventh and eighth letter combine to form a high end typing software.

Can you tell who am I ?

John is found dead in a bare field. Nobody killed John,
John did not commit suicide.

Inspector Jacob found a bag just a few meters away from John which could save his life. What was in the bag?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

A man died, leaving $10,000,000 for his widow, 5 sons and 4 daughters. Each daughter received an equal amount, each son received twice as much as a daughter, and the widow received three times as much as a son.

How much did the widow receive?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?