An Urn Contains Three Red R Balls Numbered 1, 2

question 73

Multiple Choice

An urn contains three red R balls numbered 1, 2 and 3, four white W balls numbered 4, 5, 6 and 7, and three black B balls numbered 8, 9 and 10. A ball is drawn from the urn. What is the probability that it is red? ​

• A)P(
• R) =
• B)P(
• R) =
• C)P(
• R) =
• D)P(
• R) =
• E)P(
• R) =

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Definitions:

Pairs

Two things considered together because of similarity, opposition, or adjacency; often used in context to describe complementary items or concepts.

Marginal Cost

The outlay for creating another unit of a product or service.

Economies of Scale

Cost advantages that enterprises obtain due to their scale of operation, with cost per unit of output generally decreasing with increasing scale.

Output

The total amount of goods or services produced by a company, industry, or economy within a specific period.