Question

Absent -minded professor.......arrives home late at night........the house in darkness.......knocks loudly at the door ........servant open upper window........cannot see the knocker............wonders whether it is a robber....... says,'professor is not at home'....... walks away​

Answer 1

An absent minded professor, arrives home late at night. His house was in darkness and he could not see it properly. He walks up to his door and knocks loudly at the door. While the professor was waiting, the servant opens the upper window and tries to see and comprehend who the knocker was. The servant could not see the knocker. So he wonders whether the person who knocked was a robber or not. Thinking about the chances of the knocker being a robber, he says, "The professor is not at home. ". Listening to this the professor, without asking a question, walks away.