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Investment Banking Software Developer Interview Questions

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8,719 investment banking software developer interview questions shared by candidates

You have 100 balls (50 black balls and 50 white balls) and 2 buckets. How do you divide the balls into the two buckets so as to maximize the probability of selecting a black ball if 1 ball is chosen from 1 of the buckets at random?
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Investment Banking Summer Analyst

Interviewed at William Blair

4.3★
Apr 21, 2012

You have 100 balls (50 black balls and 50 white balls) and 2 buckets. How do you divide the balls into the two buckets so as to maximize the probability of selecting a black ball if 1 ball is chosen from 1 of the buckets at random?

If you had 5 red balls that contained 4 red balls and those red balls contained the original 5 red balls, then how many sets of sets of balls would I take to have a double set of red balls of varying sizes inside each next largest red ball?
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Investment Banking Vice President

Interviewed at Goldman Sachs

3.7★
Feb 3, 2012

If you had 5 red balls that contained 4 red balls and those red balls contained the original 5 red balls, then how many sets of sets of balls would I take to have a double set of red balls of varying sizes inside each next largest red ball?

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