MISSING VALUE Interview Questions

6,571,159 interview questions shared by candidates

If I had 4 coins and I flipped them and you get paid $1 for every head, what is the expectation of earnings? If I then said you had a magic wand and you could use it to tap on an even number of coins to flip them again, what would your expectation of earnings be? (i.e. you could either flip 2 or 4 coins).
avatar

Trading Intern

Interviewed at Jane Street

4.4
Oct 23, 2017

If I had 4 coins and I flipped them and you get paid $1 for every head, what is the expectation of earnings? If I then said you had a magic wand and you could use it to tap on an even number of coins to flip them again, what would your expectation of earnings be? (i.e. you could either flip 2 or 4 coins).

1 of the Final Round question: there is a token, which works as the following: you can pay XX$ to buy it, and then propose a bet. If you wins the bet, then that's it, and you can keep the token and use it in next round. If you lose the bet, you can use the token to take back half of your money. How much is that token worth based on the chips both side have on that day?
avatar

Assistant Trader

Interviewed at Jane Street

4.4
Sep 28, 2012

1 of the Final Round question: there is a token, which works as the following: you can pay XX$ to buy it, and then propose a bet. If you wins the bet, then that's it, and you can keep the token and use it in next round. If you lose the bet, you can use the token to take back half of your money. How much is that token worth based on the chips both side have on that day?

A bus has some number of people initially. At first stop, three quarters of the passenger get off, and 7 get on the bus. At the second stop, the same thing happened, three quarters of the passenger get off, and 7 get on the bus. At the third stop, exactly the same thing happened as previous two stops. What is the minimum number of passengers to start with?
avatar

Quantitative Trader

Interviewed at Jane Street

4.4
Dec 15, 2013

A bus has some number of people initially. At first stop, three quarters of the passenger get off, and 7 get on the bus. At the second stop, the same thing happened, three quarters of the passenger get off, and 7 get on the bus. At the third stop, exactly the same thing happened as previous two stops. What is the minimum number of passengers to start with?

Pretty standard question that has been asked before... keep flipping a coin until a winning combination appears (either HHT or HTT). Which strategy would you pick given the choice and why. Find the probabilities of winning associated with each strategy.
avatar

Assistant Trader

Interviewed at Jane Street

4.4
Sep 3, 2012

Pretty standard question that has been asked before... keep flipping a coin until a winning combination appears (either HHT or HTT). Which strategy would you pick given the choice and why. Find the probabilities of winning associated with each strategy.

Viewing 3371 - 3380 interview questions

Glassdoor has 6,571,159 interview questions. Prepare for your interview. Get hired. Love your job.