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There are 9 marbles. All looks exactly same (color, size). But one marble is slightly heavier. You cannot tell the difference with your hand/eyes. But you have a very sensitive and accurate balance (Taraju). You have to pay Rs 1000 each time you use the balance. You need to find out the HEAVIEST marble using the balance least number of time. How many time would you use the balance to find out the heaviest marble?
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Software Developer Intern

Interviewed at ComplianceQuest

4
Oct 3, 2020

There are 9 marbles. All looks exactly same (color, size). But one marble is slightly heavier. You cannot tell the difference with your hand/eyes. But you have a very sensitive and accurate balance (Taraju). You have to pay Rs 1000 each time you use the balance. You need to find out the HEAVIEST marble using the balance least number of time. How many time would you use the balance to find out the heaviest marble?

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