Different probability - Bayesian probability.
Trader Assistant Interview Questions
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Markov chain/recursion related probability questions, Bayes
There is another brain teaser
They asked probability and expected value questions, none of which are too complicated but can be phrased oddly to throw you off or require quite a bit of thinking.
Why are you interested in quantitative finance, and why SIG in particular?
Go to Trading Interview and do their SIG questions
Why trading, why sig, and please tell me about yourself
Options pricing (call option given discrete prob distribution)
Coin filp of HHT before HTH
Probability of a unbiased coin getting 3 heads in a row, from 5 throws.
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