# 25

Quantitative Investment Analyst interview questions shared by candidates

## Top Interview Questions

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Summer Internship - Quantitative Investment Strategies was asked...April 11, 2012

### Suppose that you have a fair coin. You start with \$0. You win 1\$ each time you get a head and loose \$1 each time you get tails. Calculate the probability of getting \$2 without getting below \$0 at any time.

1/3

1/3 Because if he requires 2 heads = \$2, then it means he require HH out of {HH,HT ,TH,TT} We cannot consider TT because it would turn to zero. Therefore, he has 1 chance out of 3. Hence 1/3. Less

Marchov chain with 2 and -1 absorbing OR geometric series 1/4^n from 1 to inf=1/3 Less

### There are 25 horses and a track where you can race 5 of them at a time. What is the minimum number of races needed in order to find the top 3 horses?

It took me a while to get the correct answer which is 7 races.

### Tell me a little bit about yourself.

p = 0.5(0.5+0.5p)

### What's a recent article you read that you think relates to quantitative investing?

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