<p>Does anyone have any idea where i can find examples of those logic/quant questions they ask at i-banking interviews....ex "how many oranges are consumed each year in the US" or "how many diapers are used in china every year" etc etc....that random stuff they ask to see your critical thinking/analytical skills</p>
<p>Any websites would be appreciated...thanks a lot in advance</p>
<p>Wilmott</a> Forums - Brainteaser Forum</p>
<p>Quantitative</a> Interview questions/answers - Quantnet.org - Financial Engineering Forum</p>
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Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what's behind the doors, opens another door, say No. 3, which has a goat. He then says to you, "Do you want to pick door No. 2?" Is it to your advantage to switch your choice?
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<p>^That problem was solved by a guy with a math PhD, who I think subsequently won the Nobel Prize for his work. There is certainly no one who is going to interview you that is able to explain it.</p>
<p>Not really, seems to be a pretty straightforward statistics problem.</p>
<p>When you first pick a choice, you have a 1/3 chance of picking the car. But, the host picks the door with the goat, which eliminates one of the possibilities. Remember however, that you're not going to have a whole new set of choices. You should stay with your current choice because your original probability is 1/3 and now it's 2/3 as one of the other choices is eliminated. If you change, then your probability of winning is 1/2.</p>
<p>Exactly my point - you would be wrong. I think the general reaction is that either remaining door would have an equal probability; however, the math prof proved that after seeing which door has the goat that you should change your selection to the other remaining choice that you had not chosen initially. </p>
<p>This problem is not going to be asked by any senior banker because they're not going to understand it. Brainteasers like how many traffic lights there are in NYC and the like are more the norm.</p>
<p>And how do these questions show that you can do the job?</p>
<p>They don't, but the interviewers want to see how you think and get an indication of how you would work under pressure. Case study questions for consulting interviews actually are more relevant to how one would approach the job and many times aren't really much different than these general brainteasers. You don't really need to be that smart to be an analyst in IB, just seem smart and show that you can get things done under tight time constraints while maintaining decorum of being someone people would want to work with.</p>
<p>These are quant interview questions. </p>
<p>Monty</a> Hall problem - Wikipedia, the free encyclopedia</p>
<p>I thought the answer was simple(after reading the explanation). The only time staying with your original choice will hurt you is if you chose right the first time. Which is 1/3, any other time (2/3) you would be right.</p>
<p>Really, now that's interesting. I'll have to look at that more closely. Now would these questions be more heavily asked to those applying for S&T positions than M&A?</p>