@stevecase6168
"Look at him! That's my quant. My quantitative! My math specialist. Look at him. Do you notice anything different about him? Look at his face...look at his eyes! His name is Yang. He won a national math competition in CHINA and he doesn't even speak English! Yeah, I'm sure of the math..." - Jared Vennett (the Big Short 2015)
@jrbn4026
yea ion think ima get the job
@InfiniteQuest86
It helps to have such a messy white board in the background to give the illusion you use it a ton.
@peeper2070
We were made to hunt boars and die at 40. How do I uninstall this dlc
@pietdenolder
I am flattered that the algorithm gave me this video but I'm really more of a memecoin person. Thank you though.
@bigchonkers47
these quant dudes are insanely intelligent, im about to take a part time masters in quant finance and the notes are looking tough af
@AMA_RILDO
I’m still listening at the 1st question for the 21th times, like convincing myself that if I understand the question I can instantly find the answer
@BrentonOneal-s1p
thinking about consulting strategy honestly takes me back. i was stuck trying to piece together cases solo and it wasnt clicking. thats when i bumped into The Thinksters. back then, they offered a session for free, which was eye-opening. they showed me how to frame problems way better. now im off to Bain! talk about wild turns, right?
@jonatansvensson8346
For the last problem, introduce two states. One where we have balls in one of the buckets and one where we have balls in two of them. We know before flipping the coin that we will have at least one ball so put it in any bucket, we will then be in the first state described above. Now the game can be formulated as follows, whenever we toss a tails randomly add a ball to one of the three buckets and whenever we flip a heads we stop and see if all three buckets are full. The probability of winning this game (the game ending with all buckets full) is equivalent to the formulation in the video. We now see that the possible moves from state 1 are: to losing, back to state 1 or to state 2 and possible transitions from state 2 are: to losing, back to state 2 or winning. Now assign probabilities, p1 and p2, of us winning given that we are in state 1 and 2 respectively (this makes sense as the game has no memory, i.e the probability of winning from a given state is always the same). We know that p1 = 1/2*0 + 1/2*1/3*p1 + 1/2*2/3*p2. (Half of the time we flip a head and lose (only 1 bucket is full), the other half we add a ball randomly to our buckets. 1/3 of the time this will be to the bucket that is already full and 2/3 into one of the other 2 moving us to state 2). Similarly we get that p2 = 1/2*0 + 1/2*1/3 + 1/2*2/3*p2 (here one could talk about a winning state but it's not really necessary. The point is once we reach it we know we will win the game) implying p2=1/4. From the first equation p1 =2/5*p2 and we finally get p1=1/10. This might seem complicated when formulated in a comment like this but the methodology is really powerful and can be used for a wide range of problems. Almost always when you get an infinite sum in your solution the problem could've been formulated with states and implicit formulas would've given you the answer in a much neater fashion.
@Hello-pl2qe
Jesus no wonder Ive lost all my money
@blueboyd5297
THat is an introductory probability problem (chapter 1 or 2 to the letter). Understand for the interview sake explaining the thought process and ability to communicate and hear an idea. That question was alot easier than I thought would be asked of a quant.
@blindyogi4997
He was supposed to close his eyes and answer the probability!!
@Amylin20112
Thanks for making this video! This is super helpful.
@scamperooniespanker8736
i worked as a quant at optiver for 3 years in the us office in chicago. These questions are entirely expected at an interview. You won't be doing this shit for work tho. These foundational skills help give you the ability to seek out patterns and signals within data but at the end of the day, your whole job wont just be maths -- you'll have actual projects to complete. Honestly just make sure you can program pretty decently -- especially with asynchronous programming, data science libs (like numpy, pandas, etc), and the like
@vishalsulibhavi
interview - probability question . Real work - manupulate price
@secretnobody6460
Maam i just wanna work at McDonald's as part time
@Albedo_ase
that's my quant
@jacksdu13
First question: 1/5 * 2/3 + 1/5 * 1/3 = 1/5 (left and right shoes). 3 pairs of 6 shoes, no replacement. Fix the first shoe, you have 5 options left. Only 2 of those make a valid pair, and once chosen fist valid pair, remaining has 2/3 and 1/3 prob for each choice
@m3talHalide-rt2fz
This seemed like a really weird way to say how many invalid sets can be made and whats the probability randomly selecting a valid set from all possible sets. The selection bit trips people up a lot. It doesnt matter because everything gets paired. Its really just asking of all possible sets of {445566}, imagine all the valid {(45),(54),66)} and invalid sets {(64),(64),(55)} (*2 ways this could happen*) - were written on a scraps of paper and thrown in a bag, whats the chance of picking out a scrap that had a valid set, or what is the probability of not picking a scrap that has (46) or (64) in any of the 3 pairings. If the bag had every variation of A1A2.. how many scraps would have AC pairings in any of the 3 pairs (A1C1, A1C2, A2C1, A2C2).
@AndrewHa-23