Perguntas de entrevista de Research Coordinator

55.490 Perguntas de entrevista compartilhadas pelos candidatos | research coordinator

Suppose you have two covariance matrices A and B. Is AB also a covariance matrix? Suppose that, by plain dumb luck, we also have that AB=BA. Is AB a covariance matrix under this additional condition?
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Quant Research Intern

Entrevista na empresa Susquehanna International Group

3.8
18 de mar. de 2013

Suppose you have two covariance matrices A and B. Is AB also a covariance matrix? Suppose that, by plain dumb luck, we also have that AB=BA. Is AB a covariance matrix under this additional condition?

a deck of pokers. Three choices: A: 26 black, 26 Red; B: 13 black, 13 Red; C: random 26 card from the deck. Take the first two cards, if same color, the win $1, otherwise lose $1. Which deck is best for you if you are playing? Why? How to do simulations? How to draw the random pile of 26 cards?
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Quantitative Research

Entrevista na empresa Jane Street

4.4
1 de out. de 2012

a deck of pokers. Three choices: A: 26 black, 26 Red; B: 13 black, 13 Red; C: random 26 card from the deck. Take the first two cards, if same color, the win $1, otherwise lose $1. Which deck is best for you if you are playing? Why? How to do simulations? How to draw the random pile of 26 cards?

You have 9 digits 1-9. Partition them into two sets S1 and S2. Make a number (any) using the digits of partition S1. Call this x. Similarly do it for S2. Call it y. the product p=xy. What should the numbers x and y be to maximize p.
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Research Analyst

Entrevista na empresa WorldQuant

4.2
14 de mar. de 2011

You have 9 digits 1-9. Partition them into two sets S1 and S2. Make a number (any) using the digits of partition S1. Call this x. Similarly do it for S2. Call it y. the product p=xy. What should the numbers x and y be to maximize p.

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