A common GMAT probability rule you should know for test day involves finding the probability of A “or” B. But there’s a nuance to that rule that comes into play on harder questions, and this video lays it out for you. For our full video course on GMAT probability and combinatorics, visit http://www.dominatethegmat.com/video-purchase/a-la-carte-topics/probability-and-combinatorics/. Enjoy!
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