Process of Elimination

According to Wikipedia:

In educational testing, the process of elimination is a test-taking tactic for increasing the chances of answering multiple choice questions correctly. A test-taker is presented with several possibilities, of which only one answers the question. Even if only one is eliminated and the test-taker guesses among the rest, it is rather more probable he will hit it; when there are only five or four the gain in luck is substantial.

 If only people took that in and actually applied it to life.