Usually security questions are common knowledge for the person. (Mom's name, first car, birth town). Hard to forget those.
I fancy Apple, too, but let's get it right. When I opened Apple ID account, 2-3 years ago, there was only one „security" question, and I know my answer to that. However, 6 month ago, Apple choose to change its „protection" to 3 such questions, which I saw for the first time only recently while trying to buy some app from my new iPad mini. Since I do not and cannot know answers to questions I was never asked (so it is not that I forgot answers), my iPad mini was blocked for any further purchase. Which is not so big deal, except that - if asked again, without possibility to reply - my complete ID account could be blocked, and with it all what I bought in the last couple of years from Apple app Store.
I spent the good part of this afternoon looking for solution to this problem on several net forums, only to find out that I am one of many, many similar cases in the last couple of months. Apple made a mess with its „protection" policy, and what's more - does not offer any simple, useful solution to the problem Apple created. Writing e-mails to them does not help; one should go through phone calls via Apple support team to their Security team, and, if lucky, they might reset „security question" for you, provided you give them a lot of other personal data to convince them that you are really - you. And I cannot call Apple from where I live now because it would cost me a fortune.
The point is this: to avoid Apple mess
better not forget your answers -
if you have been ever asked the 2-3 „security questions", that is. Even better, check your Apple ID account whether your have these „security questions" and your answers, memorize or write them down, in case you need them. Otherwise, you could be out of luck and in potential trouble. And don't rely on Apple help, whatever they say on their web pages.