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# Phone interview with SIG

Discussion in 'Prop Firms' started by Brian Diesel, Apr 25, 2006.

1. ### Brian Diesel

I have a phone interview with SIG coming up. They said I will be asked some probability questions. Just wondering if anyone knew what kind of questions they would ask?

Just trying to get some input.

Thanks

B Diesel

2. ### bdraws

Read getting the best of it by david sklansky, focus only on the first 85 pages on the odds.

3. ### timmyz

My guess is questions like

marbles:
you have 2 red marbles and 8 white marbles.
if you pick 1, what's probability it will be red?
if you pick 2, what's probability both will be red?
if you pick 2, what probability it will be red first and white second?
if you pick 2, what's probability at least 1 will be red?

you have 1 red, 2 white, and 3 blue marbles.
if you pick 1, what's the probability it will be red or white?

deck of cards:
if you draw 2 cards, what's the probability of getting a pair?
if you draw 2 cards, what's the probability of getting two aces?
if you draw 2 cards, what's the probability of getting an ace or spade?

my suggestion would be to understand the concept behind these questions instead of memorizing the formulas. the questions can be easily rephrased so that the formula does not apply. i thinks there's an old ET thread with other interview questions.

4. ### wilburbear

http://www.thememoryhole.org/corp/finance/sec_amex_report.htm

See link above. Question will be:

If you are SIG management, and you are illegally fading arbitrageurs on the AMEX, and other option exchanges, do you

a)admit wrongdoing and offer to settle

b)carry on like nothing has happened, and posture like a respectable member of the financial community.

Choice "b" will propel you further in the SIG organization.

5. ### Brian Diesel

Thanks guys, it went well. Was pretty easy. We'll see how it goes. I'll find out in a few weeks.

6. ### Mr B

what did they ask you? was it for the Dublin office?

7. ### Brian Diesel

No, it was for the US. Just asked basic questions, only 1 math question.

If you had a deck of 52 playing cards, no jokers. What is the probability of pulling 3 of a kind?

8. ### riskarb

416:1 against

9. ### Brian Diesel

close.

1st card 52/52
2nd card 1/51
3rd card 1/50

The first card I had a tough time. I kept thinking 1/52. But the 1st card you can pick anycard, it's the 2nd and 3rd that have to match the 1st. So it's 1/425

10. ### riskarb

Damn... well, it's 6:25 here and my 2yo has been up most of the night.

#10     Apr 28, 2006
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