Operations Engineer Interview Questions

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You have scales and 9 identically looking balls, 8 of them have the same weight and the 9th is heavier. How many times do you need to use the scales to find the heavier one. Now suppose you're allowed to use the scales 3 times. What is the maximum number of balls as above, among which you can find the heavier one. What is the answer if you're allowed to use the scales n times. The other question I was asked has already been mentioned here.
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Trading Operations Analyst

Interviewed at Virtu Financial

4
Dec 5, 2015

You have scales and 9 identically looking balls, 8 of them have the same weight and the 9th is heavier. How many times do you need to use the scales to find the heavier one. Now suppose you're allowed to use the scales 3 times. What is the maximum number of balls as above, among which you can find the heavier one. What is the answer if you're allowed to use the scales n times. The other question I was asked has already been mentioned here.

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