GMAT Ninja Quant Ep 17: Probability

Are you intimidated by probability questions on the GMAT or Executive Assessment? Do you lack confidence in the fundamentals of probability? Alternatively, are you aiming for an 85+ in the quant section? Do you want to make sure you've covered everything? In this video, Charles -- the founder of GMAT Ninja and owner of a perfect 800 score -- will show you how to think about probability questions on the GMAT or EA. He'll show you that there's actually remarkably little variation in probability questions, once you understand the fundamentals. The difficulty level in this video will be gentle in the first half and tough in the second. The focus in the first half will be on your conceptual understanding of probability. In the second half, Charles will dig into the variations the GMAT or EA could throw at you to make probability questions difficult. This is video #17 in our series of full-length GMAT quant lessons. For updates on upcoming videos, please subscribe! This video will cover: ➡️ How much does probability matter? ➡️ The basics you’ll need for an 80+ ➡️ With(out) replacement questions ➡️ 'At least one' questions ➡️ When multiplication fails ➡️ Gratuitously hard questions (of dubious value) ➡️ “Not really probability” questions This video is for you if: ➡️ You're new here ➡️ You struggle with probability fundamentals ➡️ Probability keeps you awake at night, somewhat irrationally ➡️ You keep multiplying blindly ➡️ You want a Q85+ __________________________________________________________________________________________ Want more GMAT test-prep tips and advice? Subscribe to our YouTube channel: https://www.youtube.com/c/GMATNinjaTutoring For more information about GMAT tutoring: https://www.gmatninja.com/ For updates on this series and our other projects: https://www.instagram.com/gmatninja/ For more on Charles Bibilos and his love of international food and contributions to ornithology textbooks: https://www.gmatninja.com/charles-bibilos __________________________________________________________________________________________ Chapters: 00:00 Introduction 02:24 Q1 - Without replacement 08:03 Q2 - Choices across time 11:41 Q3 - At least one 18:52 Q4 - Data Sufficiency 23:56 Q5 - Summing across sets 28:42 Q6 - Exactly three out of four 34:08 Q7 - Gratuitously hard DS problem 45:19 Q8 - Not really probability