MISSING VALUE Interview Questions

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The only difficult question I was asked went as follows: "You and your opponent flip a coin. If the first player gets heads, the second player pays him $30. If he flips tails, the coin goes to the second player. If the second player flips heads, he wins $30 from the first player. How much should you pay to go first?"
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Quantitative Trader - Intern

Interviewed at Jane Street

4.4
Oct 1, 2015

The only difficult question I was asked went as follows: "You and your opponent flip a coin. If the first player gets heads, the second player pays him $30. If he flips tails, the coin goes to the second player. If the second player flips heads, he wins $30 from the first player. How much should you pay to go first?"

Two people painting a house, one on his own takes 1hr and the other takes 2hrs, how long does it take for both to paint the house. After my answer he asked how confident I was then said that I could bet on my answers, £1 if I got it right, -£1000 if I got it wrong - should I take the bet.
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Full Time Trader

Interviewed at Jane Street

4.4
Jun 29, 2012

Two people painting a house, one on his own takes 1hr and the other takes 2hrs, how long does it take for both to paint the house. After my answer he asked how confident I was then said that I could bet on my answers, £1 if I got it right, -£1000 if I got it wrong - should I take the bet.

Given a dictionary, print the key for nth highest value present in the dict. If there are more than 1 record present for nth highest value then sort the key and print the first one (alphabetically). N can be higher than the number of elements in the dictionary.
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Data Engineer

Interviewed at Meta

3.5
Aug 17, 2021

Given a dictionary, print the key for nth highest value present in the dict. If there are more than 1 record present for nth highest value then sort the key and print the first one (alphabetically). N can be higher than the number of elements in the dictionary.

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