Brain Teaser Of The Day: The Bank Robbery

Armed robbers invaded a bank. They were busy looting when suddenly a phone rang. The phone happened to be at the reception. One of the robber asked the receptionist to attend the call and talk without giving away the situation. The call happened to be from her mother. She said, ‘Do you have an emergency, mom? Can you give me a call when I get home, I could really use your help in buying new curtains?’ Then she hangs up.

The robbers are busy when the police arrives suddenly along with the mother of the receptionist. How did she know about the robbery?

Brain Teaser Of The Day: The Bank Robbery