1 Ball is defected of of 8 can you find in 2 weighs?
Best answer
NO, It is not possible.
This can be explained by information theory. We need to extract 16 units of information (A ball may be light or heavy -2 units and it can be one of 8 balls). However, we gain just 3 units of information (light, heavy or equal).
So, we need ceil[log3(16)] = 3 weighings.
In the similar question you linked to, we had 24 units of information and so we needed ceil[log3(24)] = 3 weighing.
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Answer Source – Simranjit Kohli,
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