Goldman Sachs Interview Question: he problem (1) is likely to i... | Glassdoor

Interview Question

Engagement Manager Interview New York, NY

he problem (1) is likely to involve eight balls, one of

  which is slightly heavier than the others. You have a two-armed scale, which you are allowed to use only twice.
Answer

Interview Answer

2 Answers

1

Your challenge: find the ball that's heavier

Interview Candidate on Apr 10, 2010
1

1. Separate balls into groups of 3+3+2
2. Weigh the 3 vs 3 (1st weighing)
3.Result of 1st weighing - If step 2 equal, then weight the remaining 2 balls against each other (2nd weighing), If one group of 3 heavier than the other, pick two balls from heavier group of 3 and weigh against each other

firstdallas on Aug 2, 2010

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