But what is the probability of getting the right answer to a mathematical problem or any kind of question just by guessing? Well, it turns out that the chances of getting it right are pretty good!

Watch this video of the odds of passing a test if you don't know any of the answers. Everyone has been in the situation when you sit a test for which you haven’t prepared. Which is the best approach in this case? Well, sometimes randomly choosing an answer is better than choosing none!

This video will introduce you to the concept of probabilities, which is part of the maths knowledge that you should master in order to be successful in the GMAT or GRE exam.