Nine balls

Imagine that you have exactly the same appearance as nine balls, of which one has a greater mass than the other. You have isosceles weights. Post a procedure as you would using weights to discover heavier balls. How many measurements at least do you have to do?

Correct answer:

n =  2

Step-by-step explanation:

OOO  vs  OOO  O O  vs   O  O n=2



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