You have eight balls of the same size: 7 weigh the same and 1 is slightly heavier

MATHEMATICS · Subjective · CBSE · Mathematics · Permutations and Combinations · Permutations and Combinations

Problem

You have eight balls of the same size: 7 weigh the same and 1 is slightly heavier. How can you find the heavier ball using a balance in only two weighings?

Related theory

Counting Techniques
Counting principle and permutations
Algebra
Divisibility test rules
Fundamental principle of counting
Permutations and Combinations

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