A high school has a strange principal. On the first day, he has his students perform an odd opening day ceremony:

There are one thousand lockers and one thousand students in the school. The principal asks the first student to go to every locker and open it. Then he has the second student go to every second locker and close it. The third goes to every third locker and, if it is closed, he opens it, and if it is open, he closes it. The fourth student does this to every fourth locker, and so on. After the process is completed with the thousandth student, how many lockers are open?

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

Which is faster, Heat or Cold ? Explain.

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

Imagine you are in a room with no windows or doors. How will you get out?

What has many keys but can’t open a single lock?

Can you make a six-letter word using the letters N, A and B ?

Find the value of "?" in the ball picture Riddle below:

A boy and his father are caught in a traffic accident, and the father dies. Immediately the boy is rushed to a hospital, suffering from injuries. But the attending surgeon at the hospital, upon seeing the boy, says 'I cannot operate. This boy is my son.' How is this situation explained?

Why 1729 is a magic number? Answer Logically.