What is next number in the pattern below:

131 517 192 123 ?

You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.

Which letter of the alphabet has the most water?

A person is found murdered in his Chamber. When the crime scene is investigated, the Investigator find out that there is a calendar on which the victim has written a few numbers with his blood. The numbers are 4, 11, 11 and 4.

There are four suspects in the murder, John, Jacob, Anna and Lee. Can you find out who is the murderer?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

A detective visits his friend John just to discover that John's neighbour Dr Jacob was murdered. Dr Jacob, who is a mathematician wrote the murderer's name in a code word "Hcqtfz". There were five suspects
1. Ajit
2. Pankaj
3. Ganpat
4. Deenu
5. Hariya

The Detective was instantly able to find the murderer.
Can you?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

How many times can you subtract the number two from the number fifty?

What do you get if you add 2 to 100 four times?