Here is a set of free short videos for stepwise preparation of Probability on GMAT. For a more detailed treatment of the topic, you may want to opt for our GMAT online course or our GMAT test series of 15 mock tests.
What Is Probability?
A Logical Probability Example
Another Logical Example on Probability
A Probability Example Based on Set Theory
An Explanatory Example on Pnc Based Probability Questions
Basics of Conditional Probability