THE QUESTION SERIES [Can You Answer?]

This is a series of Question based on Knowledge, Humor, Common sense, Motivation. Please share your thought/view i.e. answer the question. The questions will be serially numbered but you should answer the last added question only. You can also add a question continuing the serial number. Once a new question is added, don't answer the old questions to maintain the sequence of questions. Hope this will be knowledgeable and fun. Let's see who knows what?

 PLEASE DON'T ADD ANY VULGUR QS.