I'm sorry, but this place has become a troll's playground, a joke, and a disgrace. Innocent posts are deleted and nasty ones remain. Anyone can see that. Trolls run all over the place deleting innocent questions.
There is nothing wrong with a yes or no answer in the eyes of any reasonable person if it is a yes or no question. Try giving a speech in a court of law when the answer is clearly either yes or no. And there is nothing in Yahoo's TOS or Community guidelines that say a yes or no answer is a violation. If there is, I'd like someone to point it out to me.
UPDATE: I moved your question back to Yahoo answers. Someone moved it to India > hyderabad ! This is another example proving my point, that this site has become a disgrace. I hope my action doesn't result in some troll -- I mean trusted user -- reporting and deleting this question, or my answer for that matter.