Be active and find the killer in the picture Riddle below.

A man desired to get into his work building, however he had forgotten his code.
However, he did recollect five pieces of information
* Fifth number + Third number = 14
* The fourth number is one more than the second number.
* The first number is one less than twice the second number.
* The second number and the third number equals 10.
* The sum of all five numbers is 30.

What is the code ?

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?

What will you call your mother's brother's brother-in-law?

You need to arrange three 7 and mathematical symbols to form number 1?

Complete the table series riddle by finding the number that can replace "??".

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

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

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?