A Family Has Two Children

question 75

Multiple Choice

A family has two children. What is the probability that both are girls, given that at least one is a girl?

• A) 1/8
• B) 1/4
• C) 1/2
• D) 1/3
• E) 1/6

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Definitions:

Ambient Air

The natural, outdoor air environment surrounding a particular area, not conditioned by heating or cooling systems.

Spring Brake Assembly

A combination of brake parts including a spring mechanism in heavy-duty vehicles for parking or emergency braking.

Hold-Off Diaphragm

The parking brake pancake in an air brake spring brake chamber; must be actuated to release the parking brakes.

Slack Adjuster

A device in air brake systems that adjusts the brakes as they wear to maintain proper brake performance.