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No: 01       October 19, 2022


SIXTEEN BALLS

SIXTEEN BALLS

There are sixteen balls randomly numbered from 1 to 16. The balls look the same but have different weights. You want to sort these balls according to their weight. There is an assistant to help you with this. At each step you will give the assistant any eight balls of your choice, and he will return these eight balls to you, sorted by weight. At least how many steps do you need to make sure all the balls are sorted correctly?

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Popularity: 79.2 %     Difficulty: 61.4 %    


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