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7 tennis balls are identical in every way, except that one of them weighs slightly less than the other 6. How can you identify the lightweight ball with no more than two separate weighings using a balance
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7 tennis balls are identical in every way, except that one of them weighs slightly less than the other 6. How can you identify the lightweight ball with no more than two separate weighings using a balance scale?

This is a brainteaser.

User Jennybryan
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um....I suppose put each ball onto the balance scale until you find the correct one.
User Brian Smith
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