# Math

One out of 9 otherwise identical balls is overweight. How can it be identified after 2 weighings?

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# Math

If 3 salesmen can sell three cars in seven minutes, how many cars can six salesmen sell in seventy minutes?

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One out of 9 otherwise identical balls is overweight. How can it be identified after 2 weighings?

If 3 salesmen can sell three cars in seven minutes, how many cars can six salesmen sell in seventy minutes?