An Urn Contains Five Red R Balls Numbered 1, 2

question 32

Multiple Choice

An urn contains five red R balls numbered 1, 2, 3, 4 and 5, four white W balls numbered 6, 7, 8 and 9, and three black B balls numbered 10, 11 and 12. A ball is drawn from the urn. What is the probability that it is not black? ​

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Definitions:

Constitutionally Abolished

The formal removal of laws or practices through amendments to a constitution, making them legally invalid.

Social Mobility

An upward or downward change in one's social class position in a stratified society.

Lineally Organized

Structured directly along lines of descent, typically in a family or social group, where relationships are traced through either the maternal or paternal line.

Kindred

A group of individuals related by blood, marriage, or adoption; often used to describe familial connections or ancestry.