Rules

1. The correct answer should be posted atleast 2 days after the date of posting of the puzzle so that others who have not answered can get a chance too.
2. A person should be limited to one puzzle per three days and he must not post a new one immediately after the previous one is solved; he must wait for more two days. However others can post a puzzle the next day.

What do you say about this?

P.S. What I mean is that the person posting the question shall reveal the answer as a comment after 2 days. Meanwhile, however, the others are free to answer as many times as they want. But, the one correctly answering the question first will get the points.