Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Detective Rockford was jogging near the beach at 4:30 am.
He hears a sound near the shack "No Michael, Please Do not shoot me".
Next instance he heard the sound of gunfire. Rockford rushes to the shack where he finds women lying dead and a gun in close proximity of three "Doctore Lawyer and a Teacher".

Rockford immediately knew that the Lawyer has committed the crime. How?

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?

Why Aeroplane windows are round?

If six children and two dogs were under an umbrella, how come none of them got wet?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

Solve the equation in the image by looking at the pattern closely.

The barber of Town shaves all men living in the town. No man living in the town is allowed to shave himself. The barber lives in that town. Who then shaves the barber of the town?

I have feet, but no legs. Which animal Am I?