GeneralSolvesv1

Find one heavier ball in two weighings

A balance scale divides possibilities into three outcome groups.

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Output
The heavier ball identified within two weighings
Input
Eight identical-looking balls with exactly one heavier ball
Relationship

What connects the input and output?

Weigh three against three. If balanced, weigh the remaining two. If unbalanced, take the heavier group of three and weigh one against one.

Sources

1
  1. en.wikipedia.org: Find one heavier ball in two weighingsen.wikipedia.orgCC-BY-SA-4.0

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