Quantitative Developer Interview Questions

10,161 quantitative developer interview questions shared by candidates

You and I will play a game. I lay out N coins of different denominations (i.e. nickels, dimes, quarters, pennies) in a straight line across the table. We each take turns choosing one coin from either side of the line - meaning, you can only choose one of the end coins. We keep picking coins until none are left. The winner is the person whose sum of coins is the greatest. I let you decide if you go first or second. Do you wish to go first or second? And what is your strategy?
avatar

Quantitative Developer

Interviewed at Barclays

3.9
May 2, 2012

You and I will play a game. I lay out N coins of different denominations (i.e. nickels, dimes, quarters, pennies) in a straight line across the table. We each take turns choosing one coin from either side of the line - meaning, you can only choose one of the end coins. We keep picking coins until none are left. The winner is the person whose sum of coins is the greatest. I let you decide if you go first or second. Do you wish to go first or second? And what is your strategy?

-brainteasers: you have a 6l bottle and a 4l bottle, how do you do to get 5l? -probability: in a tennis match, you and your opponent are tied with 30 points, you have a probability 0.6 of making a point and the opponent 0.4, what is your probability of winning? And how much it'll change if we make the probabilities 0.9/0.1? -mental math: 2/17 with 4 decimal digits, multiplication of 3 digits numbers
avatar

Quantitative Trading

Interviewed at Optiver

3.8
Nov 30, 2018

-brainteasers: you have a 6l bottle and a 4l bottle, how do you do to get 5l? -probability: in a tennis match, you and your opponent are tied with 30 points, you have a probability 0.6 of making a point and the opponent 0.4, what is your probability of winning? And how much it'll change if we make the probabilities 0.9/0.1? -mental math: 2/17 with 4 decimal digits, multiplication of 3 digits numbers

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